Downloaded from Downloaded from

Size: px
Start display at page:

Download "Downloaded from Downloaded from"

Transcription

1 MATTER IN OUR SURROUNDINGS Date Diagram Observatin Explanatin Cnclusin ACTIVITY 1.1 (10 marks) date n which the experiment was perfrmed. I have drawn a diagram. My diagram is neat. My diagram is well labeled. fllwing keywrds: On additin f salt/ sugar the water level des nt change. fllwing keywrds: Particles f water have spaces between them. Particles f salt ccupy the spaces between the particles f water. fllwing keywrds: Matter is made up f particles. Particles f water have big spaces between them. Particles f salt are small enugh t fit int the spaces between the particles f water. Date Diagram Observatin Explanatin Cnclusin ACTIVITY 1.2 (8 marks) I have mentined the date n which the experiment was perfrmed. I have drawn a diagram. My diagram is neat. My diagram is well labeled. fllwing keywrds: With every dilutin the clur f ptassium permanganate in water becmes lighter. fllwing keywrds: A few crystals f ptassium permanganate can clur a large quantity f water. fllwing keywrds: Matter is made up f extremely small particles. There must be millins f tiny particles f ptassium permanganate in just ne crystal f ptassium permanganate.

2 Date Diagram Observatin Explanatin Cnclusin ACTIVITY 1.3 (16 marks) I have mentined the date n which the experiment was perfrmed. I have drawn a diagram. My diagram is neat. My diagram is well labeled. fllwing keywrds: I culd nt smell the unlit incense stick frm a distance. I culd smell the lighted incense stick frm a distance. fllwing keywrds: A burning incense stick releases fragrant smke. This smke cnsists f particles which have high kinetic energy. The smke particles with high kinetic energy travel thrugh the big spaces between the air particles. This intermixing f particles f smke and air is diffusin. Unlit incense sticks d nt have high energy fragrant smke particles. Hence we are nt able t smell them. fllwing keywrds: Particles f matter mve. Therefre, particles f matter pssess kinetic energy. Increase in temperature f matter causes its particles t mve faster. The kinetic energy f particles increases with increase in temperature. The rate f diffusin becmes higher with rise in temperature. 5 marks 5 marks

3 Date Diagram Observatin Explanatin Cnclusin ACTIVITY 1.4 (8 marks) date n which the experiment was perfrmed. I have drawn a diagram. My diagram is neat. My diagram is well labeled. fllwing keywrds: The ink diffuses at a faster rate than hney. fllwing keywrds: ink has very small slid particles disslved in water. hney has large particles held tgether by strng intermlecular frces f attractin. fllwing keywrds: Larger particles diffuse slwly while small particles diffuse faster. ACTIVITY 1.5 (1) Date Diagram Observatin Explanatin Cnclusin I have mentined the date n which the experiment was perfrmed. I have drawn a diagram. My diagram is neat. My diagram is fllwing keywrds: well labeled. fllwing keywrds: In water ptassium permanganate crystals first settle dwn and then slwly diffuse in the water. A dense purple slutin Ptassium permanganate diffuses faster in ht water than in cld water. Water mlecules are cntinuusly in mtin. The water mlecules cllide against the ptassium permanganate crystals and break them dwn int smaller particles. The smaller ptassium permanganate particles are able t mve faster. Due t the randm cntinuus mtin f water mlecules and ptassium permanganate particles diffusin finally takes place. In ht water the mlecules f water mve faster and have higher kinetic energy than in cld water. The high energy water mlecules cllide with the ptassium permanganate particles with mre energy. Hence diffusin is faster. fllwing keywrds: Particles f matter are in cntinuus mtin. Increase in temperature increases the kinetic energy f the particles. Rate f diffusin becmes higher n heating. 4 marks

4 Date Observatin Explanatin Cnclusin ACTIVITY 1.7 (5 marks) date n which the experiment was perfrmed. NO DIAGRAM REQUIRED fllwing keywrds: It is easiest t break the chalk and mst difficult t break the irn nail. fllwing keywrds: The particles in the irn nail have the strngest frces f attractin between them. fllwing keywrds: Particles f matter have frces f attractin between them which hld them tgether. The strength f this frce f attractin between particles differs frm ne matter t anther. Date Observatin Explanatin Cnclusin ACTIVITY 1.8 (7 marks) date n which the experiment was perfrmed. NO DIAGRAM REQUIRED fllwing keywrds: It is easy t break the stream f water with ne s fingers. The stream f water rejins nce we remve ur fingers. fllwing keywrds: The particles f water are lsely packed hence ir is easy t break the stream f water. The water stream rejins due t the frces f attractin between the particles f water. fllwing keywrds: Particles f matter attract each ther. Particles f water have large spaces between them.

5 Date Diagram Observatin Explanatin Cnclusin ACTIVITY 1.11 (7 marks) date n which the experiment was perfrmed. I have drawn a diagram. My diagram is neat. My diagram is well labeled. fllwing keywrds: It was easiest t push the pistn in the syringe which had nly air. fllwing keywrds: There are large spaces between the particles f air. fllwing keywrds: Slids and liquids cannt be cmpressed and they ccupy definite vlumes. Gases can be easily cmpressed due t the large spaces between their particles. Gases d nt have a definite vlume.

6 1. Which f the fllwing best describes a SOLID? MCQs Particle Mdel f slids, Liquids and Gases fills cntainer, takes shape f cntainer, flws easily, lw density definite vlume, definite shape, des nt readily flw, high density definite vlume, takes shape f cntainer, flws easily, high density fills cntainer, definite shape, des nt readily flw, lw density 2. The table shws the melting pints and biling pints f sme substances A t D. Which substance is a liquid at -10 C and a gas at 10 C? Melting Pint C and Biling Pint C -66 and and and 4 90 and BOILING is the state change frm? liquid t gas gas t liquid liquid t slid slid t liquid 4. Air is in a bttle with a tight screw-tp. When the bttle becmes cler, the pressure inside decreases because the mlecules f air? mve faster mve slwer becme bigger becme smaller 5. The table belw shws the melting pints and biling pints f substances A t D. Which substance is suitable t use in a thermmeter that measures in the range -4 C t 50 C? Melting pint C (mpt), Biling Pint C (bpt) mpt = 0, bpt = 100 mpt = -110, bpt = 80 mpt = 40, bpt = 350 mpt = -200, bpt = 40

7 6. The diagram shws an experiment using a light clurless gas (air) and a heavier brwn clured gas (brmine r nitrgen dixide). The gases fully mix tgether because? all the gas particles can mve arund freely f cnvectin currents in the air the gases have different densities (ne is 'lighter' r 'heavier' than the ther) the air can sink int the clured gas and the clured gas can flat n air 7. The diagram shws an experiment using a light clurless gas (air) and a heavier brwn clured gas (brmine r nitrgen dixide). The gases spread arund in the gas jars by a prcess called? evapratin cndensatin diffusin sedimentatin 8. Which f the fllwing is the ppsite f evaprating? cndensing melting freezing biling 9. Which f the fllwing best EXPLAINS why liquids flw much mre easily than slids? liquid particles are lighter than slid particles liquid particle attractive frces are weaker than slid particle attractive frces liquid particles have mre energy than slid particles liquid particles can change shape mre easily than slid particles 10. CONDENSING is the state change frm? liquid t slid gas t liquid liquid t gas slid t liquid 11. Which describes sand? a liquid a gas difficult t classify simply as gas, liquid r slid

8 a slid 12. Starting with the slid, the graph shws the results f measuring the temperature f substance X as it was heated frm a lw t a high temperature. Which f the fllwing is TRUE? X is melting between times t0 and t1 X is biling between times t2 and t3 temperature TE1 is the melting pint f X X is cmpletely liquid between times t1 and t2 13. Which f the fllwing best describes what happens t the particles f water vapur when it cndenses? They lse energy and and are clser and less free t mve arund They gain energy and increase their freedm t mve withut significant attracti They lse energy and lse freedm t mve abut They gain energy and gain freedm t mve abut 14. Which f the fllwing best EXPLAINS why the liquid in a glass thermmeter expands with rise in temperature? the liquid particles get bigger expanding the liquid the glass cntracts frcing the liquid further up the tube the liquid particles gain mre energy and cllide mre frcefully the glass particles gain mre energy and push the liquid particles up the tube 15. Which f these is a gas? sand water rck xygen 16. Gases diffuse because they? have a lw density easily mve as cnvectin currents

9 are made f rapidly mving particles have lw biling pints 17. Which describes carbn dixide? a gas a liquid difficult t classify simply as gas, liquid r slid a slid 18. Water turning t a slid is called? freezing biling cndensing melting 19. The table shws the melting pints and biling pints f sme substances A t D. Which substance is a liquid at 20 C? Melting Pint C and Biling Pint C -142 and and 4-66 and and Which f the fllwing best describes what happens t the particles f ice when it melts? They lse energy and lse freedm t mve abut They lse energy and escape int the atmsphere They gain energy and gain freedm t mve abut They gain energy and break up int atms f hydrgen and xy

10 THE THREE STATES OF MATTER GAS-LIQUID-SOLID PARTICLE THEORY MODELS 1. Particle mdel f gases A gas has n fixed shape r vlume, but always spreads ut t fill any cntainer. There are almst n frces f attractin between the particles s they are cmpletely free f each ther. The particles are widely spaced and scattered at randm thrughut the cntainer s there is n rder in the system. The particles mve rapidly in all directins, frequently clliding with each ther and the side f the cntainer. With increase in temperature, the particles mve faster as they gain kinetic energy. Using the particle mdel t explain the prperties f a Gas Gases have a very lw density ( light ) because the particles are s spaced ut in the cntainer (density = mass / vlume). Density rder: slid > liquid >>> gases Gases flw freely because there are n effective frces f attractin between the gaseus particles - mlecules. Ease f flw rder: gases > liquids >>> slids (n real flw in slid unless yu pwder it!) Because f this gases and liquids are described as fluids. Gases have n surface, and n fixed shape r vlume, and because f lack f particle attractin, they always spread ut and fill any cntainer (s gas vlume = cntainer vlume). Gases are readily cmpressed because f the empty space between the particles. Gas pressure Ease f cmpressin rder: gases >>> liquids > slids (almst impssible t cmpress a slid) When a gas is cnfined in a cntainer the particles will cause and exert a gas pressure which is measured in atmspheres (atm) r Pascals (Pa = N/m 2 ) - pressure is frce/area n which frce is exerted. The gas pressure is caused by the frce created by millins f impacts f the tiny individual gas particles n the sides f a cntainer. Fr example - if the number f gaseus particles in a cntainer is dubled, the gas pressure is dubled because dubling the number f mlecules dubles the number f impacts n the side f the cntainer s the ttal impact frce per unit area is als dubled.

11 This dubling f the particle impacts dubling the pressure is pictured in the tw diagrams belw. 2 x particles ===> P x 2 If the vlume f a sealed cntainer is kept cnstant and the gas inside is heated t a higher temperature, the gas pressure increases. The reasn fr this is that as the particles are heated they gain kinetic energy and n average mve faster. Therefre they will cllide with the sides f the cntainer with a greater frce f impact, s increasing the pressure. DIFFUSION in Gases: The natural rapid and randm mvement f the particles in all directins means that gases readily spread r diffuse. Diffusin is faster in gases than liquids where there is mre space fr them t mve (experiment illustrated belw) and diffusin is negligible in slids due t the clse packing f the particles. Diffusin is respnsible fr the spread f durs even withut any air disturbance e.g. use f perfume, pening a jar f cffee r the smell f petrl arund a garage. The rate f diffusin increases with increase in temperature as the particles gain kinetic energy and mve faster. Other evidence fr randm particle mvement including diffusin: When smke particles are viewed under a micrscpe they appear t 'dance arund' when illuminated with a light beam at 90 t the viewing directin. This is because the smke particles shw up by reflected light and 'dance' due t the millins f randm hits frm the fast mving air mlecules. This is called 'Brwnian mtin' (see belw in liquids). At any given instant f time, the hits will nt be even, s the smke particle get a greater bashing in a randm directin.

12 2. Particle mdel f Liquids A liquid has a fixed vlume at a given temperature but its shape is that f the cntainer which hlds the liquid. There are much greater frces f attractin between the particles in a liquid cmpared t gases, but nt quite as much as in slids. Particles quite clse tgether but still arranged at randm thrughut the cntainer, there is a little clse range rder as yu can get clumps f particles clinging tgether temprarily. Particles mving rapidly in all directins but mre frequently cllisins with each ther than in gases due t shrter distances between particles. With increase in temperature, the particles mve faster as they gain kinetic energy, s increased cllisin rates, increased cllisin energy and increased rate f diffusin. Using the particle mdel t explain the prperties f a Liquid Liquids have a much greater density than gases ( heavier ) because the particles are much clser tgether because f the attractive frces. Mst liquids are just a little less dense than when they are slid Water is a curius exceptin t this general rule, which is why ice flats n water. Liquids usually flw freely despite the frces f attractin between the particles but liquids are nt as fluid as gases. Nte 'sticky' r viscus liquids have much strnger attractive frces between the mlecules BUT nt strng enugh t frm a slid. Liquids have a surface, and a fixed vlume (at a particular temperature) because f the increased particle attractin, but the shape is nt fixed and is merely that f the cntainer itself. Liquids seem t have a very weak 'skin' surface effect which is caused by the bulk mlecules attracting the surface mlecules disprprtinately. Liquids are nt readily cmpressed because there is s little empty space between the particles, s increase in pressure has nly a tiny effect n the vlume f a slid, and yu need a huge increase in pressure t see any real cntractin in the vlume f a liquid. Liquids will expand n heating but nthing like as much as gases because f the greater particle attractin restricting the expansin (will cntract n cling). Nte: When heated, the liquid particles gain kinetic energy and hit the sides f the cntainer mre frequently, and mre significantly, they hit with a greater frce, s in a sealed cntainer the pressure prduced can be cnsiderable!

13 The natural rapid and randm mvement f the particles means that liquids spread r diffuse. Diffusin is much slwer in liquids cmpared t gases because there is less space fr the particles t mve in and mre blcking cllisins happen. Just drpping lumps/granules/pwder f a sluble slid (preferably clured!) will resulting in a disslving fllwed by an bservable diffusin effect. Again, the net flw f disslved particles will be frm a higher cncentratin t a lwer cncentratin until the cncentratin is unifrm thrughut the cntainer. Diffusin in liquids - evidence fr randm particle mvement in liquids: If clured crystals f e.g. the highly clured salt crystals f ptassium permanganate are drpped int a beaker f water and cvered at rm temperature. Despite the lack f mixing due t shaking r cnvectin currents frm a heat surce etc. the bright purple clur f the disslving salt slwly spreads thrughut all f the liquid but it is much slwer than the gas experiment described abve because f the much greater density f particles slwing the spreading due t clse prximity cllisins. The same thing happens with drpping cpper sulphate crystals (blue, s bservable) r cffee granules int water and just leaving the mixture t stand.

14 Particle mdel f Slids A slid has a fixed vlume and shape at a particular temperature unless physically subjected t sme frce. The greatest frces f attractin are between the particles in a slid and they pack tgether as tightly as pssible in a neat and rdered arrangement. The particles are t strngly held tgether t allw mvement frm place t place but the particles vibrate abut their psitin in the structure. With increase in temperature, the particles vibrate faster and mre strngly as they gain kinetic energy. Using the particle mdel t explain the prperties f a Slid Slids have the greatest density ( heaviest ) because the particles are clsest tgether. Slids cannt flw freely like gases r liquids because the particles are strngly held in fixed psitins. Slids have a fixed surface and vlume (at a particular temperature) because f the strng particle attractin. Slids are extremely difficult t cmpress because there is n real empty space between the particles, s increase in pressure has virtually n effect n the vlume f a slid. Slids will expand a little n heating but nthing like as much as liquids because f the greater particle attractin restricting the expansin and cntractin ccurs n cling. The expansin is caused by the increased energy f particle vibratin, frcing them further apart causing an increase in vlume and crrespnding decrease in density. Diffusin is almst impssible in slids because the particles are t clsely packed and strngly held tgether with n empty space fr particles t mve thrugh.

General Chemistry II, Unit I: Study Guide (part I)

General Chemistry II, Unit I: Study Guide (part I) 1 General Chemistry II, Unit I: Study Guide (part I) CDS Chapter 14: Physical Prperties f Gases Observatin 1: Pressure- Vlume Measurements n Gases The spring f air is measured as pressure, defined as the

More information

State of matter characteristics solid Retains shape and volume

State of matter characteristics solid Retains shape and volume **See attachment fr graphs States f matter The fundamental difference between states f matter is the distance between particles Gas Ttal disrder Much empty space Particles have cmpletely freedm f mtin

More information

CHAPTER 13 Temperature and Kinetic Theory. Units

CHAPTER 13 Temperature and Kinetic Theory. Units CHAPTER 13 Temperature and Kinetic Thery Units Atmic Thery f Matter Temperature and Thermmeters Thermal Equilibrium and the Zerth Law f Thermdynamics Thermal Expansin Thermal Stress The Gas Laws and Abslute

More information

Trimester 2 Exam 3 Study Guide Honors Chemistry. Honors Chemistry Exam 3 Review

Trimester 2 Exam 3 Study Guide Honors Chemistry. Honors Chemistry Exam 3 Review Trimester 2 Exam 3 Study Guide Hnrs Chemistry BOND POLARITY Hnrs Chemistry Exam 3 Review Identify whether a bnd is plar r nnplar based ff difference in electrnegativity btwn 2 atms (electrnegativity values

More information

GASES. PV = nrt N 2 CH 4 CO 2 O 2 HCN N 2 O NO 2. Pressure & Boyle s Law Temperature & Charles s Law Avogadro s Law IDEAL GAS LAW

GASES. PV = nrt N 2 CH 4 CO 2 O 2 HCN N 2 O NO 2. Pressure & Boyle s Law Temperature & Charles s Law Avogadro s Law IDEAL GAS LAW GASES Pressure & Byle s Law Temperature & Charles s Law Avgadr s Law IDEAL GAS LAW PV = nrt N 2 CH 4 CO 2 O 2 HCN N 2 O NO 2 Earth s atmsphere: 78% N 2 21% O 2 sme Ar, CO 2 Sme Cmmn Gasses Frmula Name

More information

Chapter 11: Atmosphere

Chapter 11: Atmosphere Chapter 11: Atmsphere Sectin 1: Atmspheric Basics Objectives 1. Describe the cmpsitin f the atmsphere. 2. Cmpare and cntrast the varius layers f the atmsphere. 3. Identify three methds f transferring energy

More information

THE PARTICLE MODEL AND PROPERTIES OF THE GASES, LIQUIDS AND SOLIDS. STATES CHANGES

THE PARTICLE MODEL AND PROPERTIES OF THE GASES, LIQUIDS AND SOLIDS. STATES CHANGES THE PARTICLE MODEL AND PROPERTIES OF THE GASES, LIQUIDS AND SOLIDS. STATES CHANGES The particle model of a gas A gas has no fixed shape or volume, but always spreads out to fill any container. There are

More information

Matter Content from State Frameworks and Other State Documents

Matter Content from State Frameworks and Other State Documents Atms and Mlecules Mlecules are made f smaller entities (atms) which are bnded tgether. Therefre mlecules are divisible. Miscnceptin: Element and atm are synnyms. Prper cnceptin: Elements are atms with

More information

General Chemistry II, Unit II: Study Guide (part 1)

General Chemistry II, Unit II: Study Guide (part 1) General Chemistry II, Unit II: Study Guide (part 1) CDS Chapter 21: Reactin Equilibrium in the Gas Phase General Chemistry II Unit II Part 1 1 Intrductin Sme chemical reactins have a significant amunt

More information

Unit 11 Solutions- Guided Notes. What are alloys? What is the difference between heterogeneous and homogeneous mixtures?

Unit 11 Solutions- Guided Notes. What are alloys? What is the difference between heterogeneous and homogeneous mixtures? Name: Perid: Unit 11 Slutins- Guided Ntes Mixtures: What is a mixture and give examples? What is a pure substance? What are allys? What is the difference between hetergeneus and hmgeneus mixtures? Slutins:

More information

Interference is when two (or more) sets of waves meet and combine to produce a new pattern.

Interference is when two (or more) sets of waves meet and combine to produce a new pattern. Interference Interference is when tw (r mre) sets f waves meet and cmbine t prduce a new pattern. This pattern can vary depending n the riginal wave directin, wavelength, amplitude, etc. The tw mst extreme

More information

Name: Period: Date: BONDING NOTES ADVANCED CHEMISTRY

Name: Period: Date: BONDING NOTES ADVANCED CHEMISTRY Name: Perid: Date: BONDING NOTES ADVANCED CHEMISTRY Directins: This packet will serve as yur ntes fr this chapter. Fllw alng with the PwerPint presentatin and fill in the missing infrmatin. Imprtant terms

More information

Edexcel GCSE Physics

Edexcel GCSE Physics Edexcel GCSE Physics Tpic 10: Electricity and circuits Ntes (Cntent in bld is fr Higher Tier nly) www.pmt.educatin The Structure f the Atm Psitively charged nucleus surrunded by negatively charged electrns

More information

QCE Chemistry. Year 2015 Mark 0.00 Pages 20 Published Jan 31, Chemistry: Revision Notes. By Sophie (1 ATAR)

QCE Chemistry. Year 2015 Mark 0.00 Pages 20 Published Jan 31, Chemistry: Revision Notes. By Sophie (1 ATAR) QCE Chemistry Year 2015 Mark 0.00 Pages 20 Published Jan 31, 2017 11 Chemistry: Revisin Ntes By Sphie (1 ATAR) Pwered by TCPDF (www.tcpdf.rg) Yur ntes authr, Sphie. Sphie achieved an ATAR f 1 in 2016 while

More information

Chem 116 POGIL Worksheet - Week 3 - Solutions Intermolecular Forces, Liquids, Solids, and Solutions

Chem 116 POGIL Worksheet - Week 3 - Solutions Intermolecular Forces, Liquids, Solids, and Solutions Chem 116 POGIL Wrksheet - Week 3 - Slutins Intermlecular Frces, Liquids, Slids, and Slutins Key Questins 1. Is the average kinetic energy f mlecules greater r lesser than the energy f intermlecular frces

More information

Phys101 Final Code: 1 Term: 132 Wednesday, May 21, 2014 Page: 1

Phys101 Final Code: 1 Term: 132 Wednesday, May 21, 2014 Page: 1 Phys101 Final Cde: 1 Term: 1 Wednesday, May 1, 014 Page: 1 Q1. A car accelerates at.0 m/s alng a straight rad. It passes tw marks that are 0 m apart at times t = 4.0 s and t = 5.0 s. Find the car s velcity

More information

+ Charge attraction between a

+ Charge attraction between a 1 Types f Intermlecular Frces: Strength Interactin Picture Descriptin est Lndn Dispersin Frces (induced dipleinduced diple) + + + + + + Attractin between temprary induced diples in nn-plar mlecules. Diple-Diple

More information

Compressibility Effects

Compressibility Effects Definitin f Cmpressibility All real substances are cmpressible t sme greater r lesser extent; that is, when yu squeeze r press n them, their density will change The amunt by which a substance can be cmpressed

More information

Recitation 06. n total = P total V/RT = (0.425 atm * 10.5 L) / ( L atm mol -1 K -1 * 338 K) = mol

Recitation 06. n total = P total V/RT = (0.425 atm * 10.5 L) / ( L atm mol -1 K -1 * 338 K) = mol Recitatin 06 Mixture f Ideal Gases 1. Chapter 5: Exercise: 69 The partial pressure f CH 4 (g) is 0.175 atm and that f O 2 (g) is 0.250 atm in a mixture f the tw gases. a. What is the mle fractin f each

More information

Name: Period: Date: BONDING NOTES HONORS CHEMISTRY

Name: Period: Date: BONDING NOTES HONORS CHEMISTRY Name: Perid: Date: BONDING NOTES HONORS CHEMISTRY Directins: This packet will serve as yur ntes fr this chapter. Fllw alng with the PwerPint presentatin and fill in the missing infrmatin. Imprtant terms

More information

Midterm Review Notes - Unit 1 Intro

Midterm Review Notes - Unit 1 Intro Midterm Review Ntes - Unit 1 Intr 3 States f Matter Slid definite shape, definite vlume, very little mlecular mvement Liquid definite vlume, takes shape f cntainer, mlecules mve faster Gas des nt have

More information

Lesson 8: Types of Matter

Lesson 8: Types of Matter NOTES Name: Date: Class: Lessn 8: Types f Matter Matter: anything that has and takes up Examples f matter: Examples that are NOT matter: _ 1 Pure substances: Elements and Cmpunds a material that has a

More information

Thermodynamics Partial Outline of Topics

Thermodynamics Partial Outline of Topics Thermdynamics Partial Outline f Tpics I. The secnd law f thermdynamics addresses the issue f spntaneity and invlves a functin called entrpy (S): If a prcess is spntaneus, then Suniverse > 0 (2 nd Law!)

More information

( ) kt. Solution. From kinetic theory (visualized in Figure 1Q9-1), 1 2 rms = 2. = 1368 m/s

( ) kt. Solution. From kinetic theory (visualized in Figure 1Q9-1), 1 2 rms = 2. = 1368 m/s .9 Kinetic Mlecular Thery Calculate the effective (rms) speeds f the He and Ne atms in the He-Ne gas laser tube at rm temperature (300 K). Slutin T find the rt mean square velcity (v rms ) f He atms at

More information

Intermolecular forces Intermolecular Forces van der Waals forces Ion-dipole forces Dipole-dipole forces

Intermolecular forces Intermolecular Forces van der Waals forces Ion-dipole forces Dipole-dipole forces Intermlecular frces frces that exist between mlecules determines many f the physical prperties f mlecular liquids and slids lead t deviatins frm ideal gas behavir as well Mlecular Cmparisns f Liquids and

More information

CHEM 116 Concentrations and Colligative Properties

CHEM 116 Concentrations and Colligative Properties UMass stn, Chem 116 CHEM 116 Cncentratins and Clligative Prperties FSG is Mndays 11:00 am Lecture 10 Prf. Sevian and Tuesdays 3:30 pm bth in S-1-89 Tday s agenda Ways f expressing cncentratin Clligative

More information

Spontaneous Processes, Entropy and the Second Law of Thermodynamics

Spontaneous Processes, Entropy and the Second Law of Thermodynamics Chemical Thermdynamics Spntaneus Prcesses, Entrpy and the Secnd Law f Thermdynamics Review Reactin Rates, Energies, and Equilibrium Althugh a reactin may be energetically favrable (i.e. prducts have lwer

More information

Chapter 30: Stars. B. The Solar Interior 1. Core : the combining of lightweight nuclei into heavier nuclei

Chapter 30: Stars. B. The Solar Interior 1. Core : the combining of lightweight nuclei into heavier nuclei Chapter 30: Stars Sectin 1: The Sun Objectives 1. Explre the structure f the Sun. 2. Describe the slar activity cycle and hw the Sun affects Earth. 3. Cmpare the different types f spectra. A. Prperties

More information

A) 0.77 N B) 0.24 N C) 0.63 N D) 0.31 N E) 0.86 N. v = ω k = 80 = 32 m/s. Ans: (32) 2 = 0.77 N

A) 0.77 N B) 0.24 N C) 0.63 N D) 0.31 N E) 0.86 N. v = ω k = 80 = 32 m/s. Ans: (32) 2 = 0.77 N Q1. A transverse sinusidal wave travelling n a string is given by: y (x,t) = 0.20 sin (2.5 x 80 t) (SI units). The length f the string is 2.0 m and its mass is 1.5 g. What is the magnitude f the tensin

More information

NOTES. Name: Date: Topic: Periodic Table & Atoms Notes. Period: Matter

NOTES. Name: Date: Topic: Periodic Table & Atoms Notes. Period: Matter NOTES Unit: Tpic: Peridic Table & Atms Ntes Name: Date: Perid: Matter Atmic Structure The term matter describes all f the physical substances arund us. Matter is anything that has mass and takes up space.

More information

Lesson 8 Types of Matter

Lesson 8 Types of Matter Lessn 8 Types f Matter D Nw 6Ga, 6I 10.30.18 Take ut HW 6.13 t be checked. In CJ, cpy dwn inf frm CJ bard. Keep CJs ut and pen n desk. On DO NOW PAGE #4, cpy and answer the questins: 1. In KCl (aq), is

More information

AP CHEMISTRY CHAPTER 6 NOTES THERMOCHEMISTRY

AP CHEMISTRY CHAPTER 6 NOTES THERMOCHEMISTRY AP CHEMISTRY CHAPTER 6 NOTES THERMOCHEMISTRY Energy- the capacity t d wrk r t prduce heat 1 st Law f Thermdynamics: Law f Cnservatin f Energy- energy can be cnverted frm ne frm t anther but it can be neither

More information

Chem 163 Section: Team Number: ALE 24. Voltaic Cells and Standard Cell Potentials. (Reference: 21.2 and 21.3 Silberberg 5 th edition)

Chem 163 Section: Team Number: ALE 24. Voltaic Cells and Standard Cell Potentials. (Reference: 21.2 and 21.3 Silberberg 5 th edition) Name Chem 163 Sectin: Team Number: ALE 24. Vltaic Cells and Standard Cell Ptentials (Reference: 21.2 and 21.3 Silberberg 5 th editin) What des a vltmeter reading tell us? The Mdel: Standard Reductin and

More information

Chapter Outline 4/28/2014. P-V Work. P-V Work. Isolated, Closed and Open Systems. Exothermic and Endothermic Processes. E = q + w

Chapter Outline 4/28/2014. P-V Work. P-V Work. Isolated, Closed and Open Systems. Exothermic and Endothermic Processes. E = q + w Islated, Clsed and Open Systems 9.1 Energy as a Reactant r a Prduct 9.2 Transferring Heat and Ding Wrk 9.5 Heats f Reactin and Calrimetry 9.6 Hess s Law and Standard Heats f Reactin 9.7 Heats f Reactin

More information

Thermodynamics and Equilibrium

Thermodynamics and Equilibrium Thermdynamics and Equilibrium Thermdynamics Thermdynamics is the study f the relatinship between heat and ther frms f energy in a chemical r physical prcess. We intrduced the thermdynamic prperty f enthalpy,

More information

Chemistry 20 Lesson 11 Electronegativity, Polarity and Shapes

Chemistry 20 Lesson 11 Electronegativity, Polarity and Shapes Chemistry 20 Lessn 11 Electrnegativity, Plarity and Shapes In ur previus wrk we learned why atms frm cvalent bnds and hw t draw the resulting rganizatin f atms. In this lessn we will learn (a) hw the cmbinatin

More information

CHEM Thermodynamics. Change in Gibbs Free Energy, G. Review. Gibbs Free Energy, G. Review

CHEM Thermodynamics. Change in Gibbs Free Energy, G. Review. Gibbs Free Energy, G. Review Review Accrding t the nd law f Thermdynamics, a prcess is spntaneus if S universe = S system + S surrundings > 0 Even thugh S system

More information

BASD HIGH SCHOOL FORMAL LAB REPORT

BASD HIGH SCHOOL FORMAL LAB REPORT BASD HIGH SCHOOL FORMAL LAB REPORT *WARNING: After an explanatin f what t include in each sectin, there is an example f hw the sectin might lk using a sample experiment Keep in mind, the sample lab used

More information

Natural Sciences I. lecture 7: Heat & Temperature. The Kinetic Molecular Theory

Natural Sciences I. lecture 7: Heat & Temperature. The Kinetic Molecular Theory Natural Sciences I The Kinetic Mlecular Thery lecture 7: Heat & Temperature 1 having t d with grups f atms having t d with mtin The idea that substances are cmpsed f tiny particles (atms) can be traced

More information

Dispersion Ref Feynman Vol-I, Ch-31

Dispersion Ref Feynman Vol-I, Ch-31 Dispersin Ref Feynman Vl-I, Ch-31 n () = 1 + q N q /m 2 2 2 0 i ( b/m) We have learned that the index f refractin is nt just a simple number, but a quantity that varies with the frequency f the light.

More information

Chapter 17: Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Chapter 17: Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes Chapter 17: hermdynamics: Spntaneus and Nnspntaneus Reactins and Prcesses Learning Objectives 17.1: Spntaneus Prcesses Cmparing and Cntrasting the hree Laws f hermdynamics (1 st Law: Chap. 5; 2 nd & 3

More information

PHOTOSYNTHESIS THE PRACTICALS 16 APRIL 2014

PHOTOSYNTHESIS THE PRACTICALS 16 APRIL 2014 PHOTOSYNTHESIS THE PRACTICALS 16 APRIL 2014 Lessn Descriptin In this lessn, we will: Review the prcess f phtsynthesis Study the starch test in leaves Study the varius practicals testing phtsynthesis Lk

More information

making triangle (ie same reference angle) ). This is a standard form that will allow us all to have the X= y=

making triangle (ie same reference angle) ). This is a standard form that will allow us all to have the X= y= Intrductin t Vectrs I 21 Intrductin t Vectrs I 22 I. Determine the hrizntal and vertical cmpnents f the resultant vectr by cunting n the grid. X= y= J. Draw a mangle with hrizntal and vertical cmpnents

More information

**DO NOT ONLY RELY ON THIS STUDY GUIDE!!!**

**DO NOT ONLY RELY ON THIS STUDY GUIDE!!!** Tpics lists: UV-Vis Absrbance Spectrscpy Lab & ChemActivity 3-6 (nly thrugh 4) I. UV-Vis Absrbance Spectrscpy Lab Beer s law Relates cncentratin f a chemical species in a slutin and the absrbance f that

More information

lecture 5: Nucleophilic Substitution Reactions

lecture 5: Nucleophilic Substitution Reactions lecture 5: Nuclephilic Substitutin Reactins Substitutin unimlecular (SN1): substitutin nuclephilic, unimlecular. It is first rder. The rate is dependent upn ne mlecule, that is the substrate, t frm the

More information

C Nitrogen and others. D Oxygen and carbon

C Nitrogen and others. D Oxygen and carbon 6.5A Knw that an element is a pure substance represented by chemical symbls. Knw AN ELEMENT IS A PURE SUBSTANCE REPRESENTED BY CHEMICAL SYMBOLS Element a pure substance that cannt be brken dwn chemically

More information

Electric Current and Resistance

Electric Current and Resistance Electric Current and Resistance Electric Current Electric current is the rate f flw f charge thrugh sme regin f space The SI unit f current is the ampere (A) 1 A = 1 C / s The symbl fr electric current

More information

Study Group Report: Plate-fin Heat Exchangers: AEA Technology

Study Group Report: Plate-fin Heat Exchangers: AEA Technology Study Grup Reprt: Plate-fin Heat Exchangers: AEA Technlgy The prblem under study cncerned the apparent discrepancy between a series f experiments using a plate fin heat exchanger and the classical thery

More information

Phy 212: General Physics II 1 Chapter 18 Worksheet 3/20/2008

Phy 212: General Physics II 1 Chapter 18 Worksheet 3/20/2008 Phy 1: General Physics II 1 hapter 18 rksheet 3/0/008 Thermal Expansin: 1. A wedding ring cmpsed f pure gld (inner diameter = 1.5 x 10 - m) is placed n a persn s finger (diameter = 1.5 x 10 - m). Bth the

More information

Name: Date: Class: a. How many barium ions are there per formula unit (compound)? b. How many nitride ions are there per formula unit (compound)?

Name: Date: Class: a. How many barium ions are there per formula unit (compound)? b. How many nitride ions are there per formula unit (compound)? NOTES Name: Date: Class: Lessn 15 Part 2: Binary II Inic Bnding, Plyatmic Ins Bx 1: 1. Ba 3N 2 is the frmula fr. (name) a. Hw many barium ins are there per frmula unit (cmpund)? b. Hw many nitride ins

More information

ENGINEERING COUNCIL CERTIFICATE LEVEL THERMODYNAMIC, FLUID AND PROCESS ENGINEERING C106 TUTORIAL 5 THE VISCOUS NATURE OF FLUIDS

ENGINEERING COUNCIL CERTIFICATE LEVEL THERMODYNAMIC, FLUID AND PROCESS ENGINEERING C106 TUTORIAL 5 THE VISCOUS NATURE OF FLUIDS ENGINEERING COUNCIL CERTIFICATE LEVEL THERMODYNAMIC, FLUID AND PROCESS ENGINEERING C106 TUTORIAL 5 THE VISCOUS NATURE OF FLUIDS On cmpletin f this tutrial yu shuld be able t d the fllwing. Define viscsity

More information

o o IMPORTANT REMINDERS Reports will be graded largely on their ability to clearly communicate results and important conclusions.

o o IMPORTANT REMINDERS Reports will be graded largely on their ability to clearly communicate results and important conclusions. BASD High Schl Frmal Lab Reprt GENERAL INFORMATION 12 pt Times New Rman fnt Duble-spaced, if required by yur teacher 1 inch margins n all sides (tp, bttm, left, and right) Always write in third persn (avid

More information

Lab 4: Passive Transport & Graphing Data

Lab 4: Passive Transport & Graphing Data CWI Cncepts f Bilgy LAB Manual 42 Lab 4: Passive Transprt & Graphing Data The internal envirnment f all cells is a slutin. A slutin is a mixture f tw r mre substances that are evenly distributed thrughut.

More information

CHEM 103 Calorimetry and Hess s Law

CHEM 103 Calorimetry and Hess s Law CHEM 103 Calrimetry and Hess s Law Lecture Ntes March 23, 2006 Prf. Sevian Annuncements Exam #2 is next Thursday, March 30 Study guide, practice exam, and practice exam answer key are already psted n the

More information

Part One: Heat Changes and Thermochemistry. This aspect of Thermodynamics was dealt with in Chapter 6. (Review)

Part One: Heat Changes and Thermochemistry. This aspect of Thermodynamics was dealt with in Chapter 6. (Review) CHAPTER 18: THERMODYNAMICS AND EQUILIBRIUM Part One: Heat Changes and Thermchemistry This aspect f Thermdynamics was dealt with in Chapter 6. (Review) A. Statement f First Law. (Sectin 18.1) 1. U ttal

More information

/ / Chemistry. Chapter 1 Chemical Foundations

/ / Chemistry. Chapter 1 Chemical Foundations Name Chapter 1 Chemical Fundatins Advanced Chemistry / / Metric Cnversins All measurements in chemistry are made using the metric system. In using the metric system yu must be able t cnvert between ne

More information

MANIPAL INSTITUTE OF TECHNOLOGY

MANIPAL INSTITUTE OF TECHNOLOGY MANIPAL INSTITUTE OF TECHNOLOGY MANIPAL UNIVERSITY, MANIPAL SECOND SEMESTER B.Tech. END-SEMESTER EXAMINATION - MAY 013 SUBJECT: ENGINEERING PHYSICS (PHY101/10) Time: 3 Hrs. Max. Marks: 50 Nte: Answer any

More information

Heat is energy and is measured in joules (J) or kilojoules (kj). The symbol for heat is H.

Heat is energy and is measured in joules (J) or kilojoules (kj). The symbol for heat is H. Causes f Change Calrimetry Hw Des Energy Affect Change? Heat vs. Temerature HEAT TEMPERATURE Definitin: Deends n: Examles: Heat is energy and is measured in jules (J) r kiljules (kj). The symbl fr heat

More information

Chapter 17 Free Energy and Thermodynamics

Chapter 17 Free Energy and Thermodynamics Chemistry: A Mlecular Apprach, 1 st Ed. Nivald Tr Chapter 17 Free Energy and Thermdynamics Ry Kennedy Massachusetts Bay Cmmunity Cllege Wellesley Hills, MA 2008, Prentice Hall First Law f Thermdynamics

More information

To get you thinking...

To get you thinking... T get yu thinking... 1.) What is an element? Give at least 4 examples f elements. 2.) What is the atmic number f hydrgen? What des a neutral hydrgen atm cnsist f? Describe its "mtin". 3.) Hw des an atm

More information

Find this material useful? You can help our team to keep this site up and bring you even more content consider donating via the link on our site.

Find this material useful? You can help our team to keep this site up and bring you even more content consider donating via the link on our site. Find this material useful? Yu can help ur team t keep this site up and bring yu even mre cntent cnsider dnating via the link n ur site. Still having truble understanding the material? Check ut ur Tutring

More information

Nuggets of Knowledge for Chapter 8 Chemical Reactions II Chem 2310

Nuggets of Knowledge for Chapter 8 Chemical Reactions II Chem 2310 Nuggets f Knwledge fr Chapter 8 Chemical Reactins II Chem 2310 I. Substitutin, Additin, and Eliminatin Reactins The terms dissciatin, assciatin, and displacement are useful fr describing what happens t

More information

Unit 14 Thermochemistry Notes

Unit 14 Thermochemistry Notes Name KEY Perid CRHS Academic Chemistry Unit 14 Thermchemistry Ntes Quiz Date Exam Date Lab Dates Ntes, Hmewrk, Exam Reviews and Their KEYS lcated n CRHS Academic Chemistry Website: https://cincchem.pbwrks.cm

More information

CHAPTER Read Chapter 17, sections 1,2,3. End of Chapter problems: 25

CHAPTER Read Chapter 17, sections 1,2,3. End of Chapter problems: 25 CHAPTER 17 1. Read Chapter 17, sectins 1,2,3. End f Chapter prblems: 25 2. Suppse yu are playing a game that uses tw dice. If yu cunt the dts n the dice, yu culd have anywhere frm 2 t 12. The ways f prducing

More information

A.P. CHEMISTRY. SOLUTIONS AND ACID BASE CHEMISTRY. p 1

A.P. CHEMISTRY. SOLUTIONS AND ACID BASE CHEMISTRY. p 1 A.P. CHEMISTRY. SOLUTIONS AND ACID BASE CHEMISTRY. p 1 (Nte: questins 1 t 14 are meant t be dne WITHOUT calculatrs!) 1.Which f the fllwing is prbably true fr a slid slute with a highly endthermic heat

More information

A Chemical Reaction occurs when the of a substance changes.

A Chemical Reaction occurs when the of a substance changes. Perid: Unit 8 Chemical Reactin- Guided Ntes Chemical Reactins A Chemical Reactin ccurs when the f a substance changes. Chemical Reactin: ne r mre substances are changed int ne r mre new substances by the

More information

Physics 262/266. George Mason University. Prof. Paul So

Physics 262/266. George Mason University. Prof. Paul So Physics 262/266 Gerge Masn University Prf. Paul S PHYS 262/266 Annuncements WELCOME TO A NEW SEMESTER! Curse Website - http://cmplex.gmu.edu/www-phys/phys262 - http://cmplex.gmu.edu/www-phys/phys266 Recitatins

More information

2004 AP CHEMISTRY FREE-RESPONSE QUESTIONS

2004 AP CHEMISTRY FREE-RESPONSE QUESTIONS 2004 AP CHEMISTRY FREE-RESPONSE QUESTIONS 6. An electrchemical cell is cnstructed with an pen switch, as shwn in the diagram abve. A strip f Sn and a strip f an unknwn metal, X, are used as electrdes.

More information

Chemistry 114 First Hour Exam

Chemistry 114 First Hour Exam Chemistry 114 First Hur Exam Please shw all wrk fr partial credit Name: (4 pints) 1. (12 pints) Espress is made by frcing very ht water under high pressure thrugh finely grund, cmpacted cffee. (Wikipedia)

More information

Chapter One. Matter and Energy - Chemistry the study of matter and its changes the "central science" Natural Laws

Chapter One. Matter and Energy - Chemistry the study of matter and its changes the central science Natural Laws Chapter One Matter and Measurement http://www.chemistry.armstrng.edu/ nivens/curse_list.htm OWL HOMEWORK REQUIRED!!! Matter and Energy - Chemistry the study f matter and its changes the "central science"

More information

Examples: Everything in the universe is made up of matter. How atoms are form the. Solids Liquids Gases. The a substance has, If a substance has

Examples: Everything in the universe is made up of matter. How atoms are form the. Solids Liquids Gases. The a substance has, If a substance has Matter What is Matter? Examples: Everything in the universe is made up f matter Hw atms are frm the The States f Matter There are main states f matter Slids Liquids Gases What causes the different States

More information

Edexcel IGCSE Chemistry. Topic 1: Principles of chemistry. Chemical formulae, equations and calculations. Notes.

Edexcel IGCSE Chemistry. Topic 1: Principles of chemistry. Chemical formulae, equations and calculations. Notes. Edexcel IGCSE Chemistry Tpic 1: Principles f chemistry Chemical frmulae, equatins and calculatins Ntes 1.25 write wrd equatins and balanced chemical equatins (including state symbls): fr reactins studied

More information

Lecture 12: Chemical reaction equilibria

Lecture 12: Chemical reaction equilibria 3.012 Fundamentals f Materials Science Fall 2005 Lecture 12: 10.19.05 Chemical reactin equilibria Tday: LAST TIME...2 EQUATING CHEMICAL POTENTIALS DURING REACTIONS...3 The extent f reactin...3 The simplest

More information

Chapters 29 and 35 Thermochemistry and Chemical Thermodynamics

Chapters 29 and 35 Thermochemistry and Chemical Thermodynamics Chapters 9 and 35 Thermchemistry and Chemical Thermdynamics 1 Cpyright (c) 011 by Michael A. Janusa, PhD. All rights reserved. Thermchemistry Thermchemistry is the study f the energy effects that accmpany

More information

Deakin Research Online

Deakin Research Online Deakin Research Online This is the published versin: Hubber, Peter 2010, Ideas abut matter : teaching ideas with a representatinal fcus, Deakin University, Burwd, Vic.. Available frm Deakin Research Online:

More information

EE247B/ME218: Introduction to MEMS Design Lecture 7m1: Lithography, Etching, & Doping CTN 2/6/18

EE247B/ME218: Introduction to MEMS Design Lecture 7m1: Lithography, Etching, & Doping CTN 2/6/18 EE247B/ME218 Intrductin t MEMS Design Lecture 7m1 Lithgraphy, Etching, & Dping Dping f Semicnductrs Semicnductr Dping Semicnductrs are nt intrinsically cnductive T make them cnductive, replace silicn atms

More information

Chem 75 February 16, 2017 Exam 2 Solutions

Chem 75 February 16, 2017 Exam 2 Solutions 1. (6 + 6 pints) Tw quick questins: (a) The Handbk f Chemistry and Physics tells us, crrectly, that CCl 4 bils nrmally at 76.7 C, but its mlar enthalpy f vaprizatin is listed in ne place as 34.6 kj ml

More information

February 28, 2013 COMMENTS ON DIFFUSION, DIFFUSIVITY AND DERIVATION OF HYPERBOLIC EQUATIONS DESCRIBING THE DIFFUSION PHENOMENA

February 28, 2013 COMMENTS ON DIFFUSION, DIFFUSIVITY AND DERIVATION OF HYPERBOLIC EQUATIONS DESCRIBING THE DIFFUSION PHENOMENA February 28, 2013 COMMENTS ON DIFFUSION, DIFFUSIVITY AND DERIVATION OF HYPERBOLIC EQUATIONS DESCRIBING THE DIFFUSION PHENOMENA Mental Experiment regarding 1D randm walk Cnsider a cntainer f gas in thermal

More information

" 1 = # $H vap. Chapter 3 Problems

 1 = # $H vap. Chapter 3 Problems Chapter 3 rblems rblem At 1 atmsphere pure Ge melts at 1232 K and bils at 298 K. he triple pint ccurs at =8.4x1-8 atm. Estimate the heat f vaprizatin f Ge. he heat f vaprizatin is estimated frm the Clausius

More information

Chapter 4 Thermodynamics and Equilibrium

Chapter 4 Thermodynamics and Equilibrium Chapter Thermdynamics and Equilibrium Refer t the fllwing figures fr Exercises 1-6. Each represents the energies f fur mlecules at a given instant, and the dtted lines represent the allwed energies. Assume

More information

ITQ ARTS AND SCIENCE INTEGRATION GRADE 5 DANCE AND PHYSICAL SCIENCE

ITQ ARTS AND SCIENCE INTEGRATION GRADE 5 DANCE AND PHYSICAL SCIENCE ITQ ARTS AND SCIENCE INTEGRATION GRADE 5 DANCE AND PHYSICAL SCIENCE The Peridic Table f Elements (PTE): Families Stick Tgether Allys and Cmpunds Lessn 3 Nte: this lessn culd take up t three class sessins

More information

Chem 116 POGIL Worksheet - Week 4 Properties of Solutions

Chem 116 POGIL Worksheet - Week 4 Properties of Solutions Chem 116 POGIL Wrksheet - Week 4 Prperties f Slutins Key Questins 1. Identify the principal type f slute-slvent interactin that is respnsible fr frming the fllwing slutins: (a) KNO 3 in water; (b) Br 2

More information

Regents Chemistry Period Unit 3: Atomic Structure. Unit 3 Vocabulary..Due: Test Day

Regents Chemistry Period Unit 3: Atomic Structure. Unit 3 Vocabulary..Due: Test Day Name Skills: 1. Interpreting Mdels f the Atm 2. Determining the number f subatmic particles 3. Determine P, e-, n fr ins 4. Distinguish istpes frm ther atms/ins Regents Chemistry Perid Unit 3: Atmic Structure

More information

CHEM 1001 Problem Set #3: Entropy and Free Energy

CHEM 1001 Problem Set #3: Entropy and Free Energy CHEM 1001 Prblem Set #3: Entry and Free Energy 19.7 (a) Negative; A liquid (mderate entry) cmbines with a slid t frm anther slid. (b)psitive; One mle f high entry gas frms where n gas was resent befre.

More information

CHEM 116 Electrochemistry at Non-Standard Conditions, and Intro to Thermodynamics

CHEM 116 Electrochemistry at Non-Standard Conditions, and Intro to Thermodynamics CHEM 116 Electrchemistry at Nn-Standard Cnditins, and Intr t Thermdynamics Imprtant annuncement: If yu brrwed a clicker frm me this semester, return it t me at the end f next lecture r at the final exam

More information

Unit 9: The Mole- Guided Notes What is a Mole?

Unit 9: The Mole- Guided Notes What is a Mole? Unit 9: The Mle- Guided Ntes What is a Mle? A mle is a name fr a specific f things Similar t a r a One mle is equal t 602 602,000,000,000,000,000,000,000 That s 602 with zers A mle is NOT an abbreviatin

More information

Semester 2 AP Chemistry Unit 12

Semester 2 AP Chemistry Unit 12 Cmmn In Effect and Buffers PwerPint The cmmn in effect The shift in equilibrium caused by the additin f a cmpund having an in in cmmn with the disslved substance The presence f the excess ins frm the disslved

More information

Acids and Bases Lesson 3

Acids and Bases Lesson 3 Acids and Bases Lessn 3 The ph f a slutin is defined as the negative lgarithm, t the base ten, f the hydrnium in cncentratin. In a neutral slutin at 25 C, the hydrnium in and the hydrxide in cncentratins

More information

15.0 g Cr = 21.9 g Cr O g Cr 4 mol Cr mol Cr O

15.0 g Cr = 21.9 g Cr O g Cr 4 mol Cr mol Cr O WYSE Academic Challenge Sectinal Chemistry Exam 2008 SOLUTION SET 1. Crrect answer: B. Use PV = nrt t get: PV = nrt 2. Crrect answer: A. (2.18 atm)(25.0 L) = n(0.08206 L atm/ml K)(23+273) n = 2.24 ml Assume

More information

Group Color: Subgroup Number: How Science Works. Grade 5. Module 2. Class Question: Scientist (Your Name): Teacher s Name: SciTrek Volunteer s Name:

Group Color: Subgroup Number: How Science Works. Grade 5. Module 2. Class Question: Scientist (Your Name): Teacher s Name: SciTrek Volunteer s Name: Grup Clr: Subgrup Number: Hw Science Wrks Grade 5 Mdule 2 Class Questin: Scientist (Yur Name): Teacher s Name: SciTrek Vlunteer s Name: VOCABULARY Science: The study f the material wrld using human reasn.

More information

Find this material useful? You can help our team to keep this site up and bring you even more content consider donating via the link on our site.

Find this material useful? You can help our team to keep this site up and bring you even more content consider donating via the link on our site. Find this material useful? Yu can help ur team t keep this site up and bring yu even mre cntent cnsider dnating via the link n ur site. Still having truble understanding the material? Check ut ur Tutring

More information

Name: Period: Date: ATOMIC STRUCTURE NOTES ADVANCED CHEMISTRY

Name: Period: Date: ATOMIC STRUCTURE NOTES ADVANCED CHEMISTRY Name: Perid: Date: ATOMIC STRUCTURE NOTES ADVANCED CHEMISTRY Directins: This packet will serve as yur ntes fr this chapter. Fllw alng with the PwerPint presentatin and fill in the missing infrmatin. Imprtant

More information

11. DUAL NATURE OF RADIATION AND MATTER

11. DUAL NATURE OF RADIATION AND MATTER 11. DUAL NATURE OF RADIATION AND MATTER Very shrt answer and shrt answer questins 1. Define wrk functin f a metal? The minimum energy required fr an electrn t escape frm the metal surface is called the

More information

NUPOC STUDY GUIDE ANSWER KEY. Navy Recruiting Command

NUPOC STUDY GUIDE ANSWER KEY. Navy Recruiting Command NUPOC SUDY GUIDE ANSWER KEY Navy Recruiting Cmmand CHEMISRY. ph represents the cncentratin f H ins in a slutin, [H ]. ph is a lg scale base and equal t lg[h ]. A ph f 7 is a neutral slutin. PH < 7 is acidic

More information

AQA GCSE Physics. Topic 7: Magnetism and Electromagnetism. Notes. (Content in bold is for Higher Tier only)

AQA GCSE Physics. Topic 7: Magnetism and Electromagnetism. Notes. (Content in bold is for Higher Tier only) AQA GCSE Physics Tpic 7: Magnetism and Electrmagnetism Ntes (Cntent in bld is fr Higher Tier nly) Magnets - Nrth and Suth Ples - Same Ples repel - Oppsite ples attract Permanent Magnets - Always magnetic,

More information

Entropy, Free Energy, and Equilibrium

Entropy, Free Energy, and Equilibrium Nv. 26 Chapter 19 Chemical Thermdynamics Entrpy, Free Energy, and Equilibrium Nv. 26 Spntaneus Physical and Chemical Prcesses Thermdynamics: cncerned with the questin: can a reactin ccur? A waterfall runs

More information

PAKISTAN INTERNATIONAL SCHOOL, RIYADH

PAKISTAN INTERNATIONAL SCHOOL, RIYADH PAKISTAN INTERNATIONAL SCHOOL, RIYADH REVISION WORKSHEET Sessin 2017-2018 CLASS: IV Subject: G. Science Name: Class/sec: _ Q1: SHORT ANSWERS. Ql: Name the smallest and largest bne in human bdy? Q2: What

More information

Name Honors Chemistry / /

Name Honors Chemistry / / Name Hnrs Chemistry / / Beynd Lewis Structures Exceptins t the Octet Rule Mdel Hydrgen is an exceptin t the ctet rule because it fills its uter energy level with nly 2 electrns. The secnd rw elements B

More information

Chem 111 Summer 2013 Key III Whelan

Chem 111 Summer 2013 Key III Whelan Chem 111 Summer 2013 Key III Whelan Questin 1 6 Pints Classify each f the fllwing mlecules as plar r nnplar? a) NO + : c) CH 2 Cl 2 : b) XeF 4 : Questin 2 The hypthetical mlecule PY 3 Z 2 has the general

More information

Group 18 - The Elements.! All found in minute quantities in air. Argon is most abundant (and cheapest), comprising 0.934% of air by volume.

Group 18 - The Elements.! All found in minute quantities in air. Argon is most abundant (and cheapest), comprising 0.934% of air by volume. Grup 18 - The Elements! All fund in minute quantities in air. Argn is mst abundant (and cheapest), cmprising 0.934% f air by vlume.! Althugh rare n earth, helium is the secnd mst abundant element in the

More information