Formulas and Constants (you may remove this page)
|
|
- Patrick Lamb
- 5 years ago
- Views:
Transcription
1 Formulas and Constants (you may remove this page) NA = 6.0x0 3 mol - h = 6.66x0-34 J s c =.99x0 m s - e =.60x0-9 C me = 9.09x0-3 kg Å = x0-0 m = 00 pm atm = 760 torr R = L atm K - mol - =.34 J K - mol - ~ ν = λ = hc λ = hcν~ [gas(aq)]eq = KH (Pgas)eq vpsolution = Xsolvent vppure solvent Tf = Kf m Tb = Kb m Π V = nrt Π = MRT ln [A] [A]o = kt [A] = [A]o ekt t½ = ln /k = 0.693/k t½ = [A]ok [A] = kt [A]o = a,f a,r ln k k = a R T T ln k k = a R T T k = A e a/rt IA A IIA A 3 IIIB 3B 4 IVB 4B 5 VB 5B 6 VIB 6B 7 VIIB 7B 9 VIII 0 IB B IIB B 3 IIIA 3A 4 IVA 4A 5 VA 5A 6 VIA 6A 7 VIIA VIIIA 7A A H Li Be Na Mg K Ca Rb Sr Cs Ba Sc Y.9 57 La* 3.9 Ti Zr 9. 7 Hf V Nb Ta Cr Mo W Mn Tc (9) 75 Re 6. 6 Fe Ru Os Co Rh Ir 90. Ni Pd Pt Cu Ag Au Zn Cd.4 0 Hg B 0. 3 Al Ga In 4. Tl C.0 4 Si.09 3 Ge Sn.7 Pb N P As Sb. 3 Bi 09.0 O S Se Te Po (0) 9 F Cl Br I At (0) He Ne 0. Ar Kr Xe Rn ()
2 CH45 Chemistry 45 Practice Test Prof. Shattuck Name R =.34 J mol - K - = L atm mol - K - T(0 C) = 73.5 K Part : Answer of the following 0 questions. If you answer more than cross out the one you wish not to be graded, otherwise only the first will be graded. points each.. In the following pairs, which substance has the higher boiling point: a. CH6 or C6H4? more electrons b. HS or HO? hydrogen-bonding c. CO or NO? NO has a dipole moment. Which of these statements about benzene is true? A. All carbon atoms in benzene are sp 3 hybridized. B. Benzene contains only π-bonds between C atoms. _* C. The bond order of each C C bond in benzene is.5. D. Benzene is an example of a molecule that displays ionic bonding.. All of these statements are false. 3. From the following information calculate the Keq for reaction 3. Reaction Ag NH3 = Ag(NH3) K =.7x0 3 M - Reaction Ag(NH3) NH3 = Ag(NH3) K =.x0 7 M - Reaction 3 Ag NH3 = Ag(NH3) Keq = K K =.7x Give the hybridization for NH3 sp 3 and for SO _sp. 5. For the reaction NO CO NO CO the experimental rate law is: rate = k [NO] The following mechanism has been proposed: NO NO3 NO NO3 CO NO CO a. Which step is the rate determining step? Slow step is the rate detemrinining step step b. Is there a reactive intermediate in this reaction? If so what is it? NO3 (not a reactant or product) 6. For a first order reaction, the concentration of the reactant dropped from 0.00 M to 0.00 M in 6.00 minutes. How long does it take for the concentration to drop from 0.00 M to M? Answer: The first time interval is for [A] = [A]o/, that is one half-time, t½= 0.693/k = 6.00 min. The rate constant is then k = 0.55 min -. The second time interval is: ln([a]/[a]o) = ln(0.000 M/0.00 M) = = (0.55 min - ) t or t = 5.9 min
3 CH The rate law for a third order reaction is [A] [A]o = kt To make a straight line plot to verify third order behavior, a. what do you plot on the vertical axis? /[A]. b. what do you plot on the horizontal axis? t (time). c. what is the slope equal? slope = k. The osmotic pressure of a solution of a protein in water is.54 torr at 5.0. The solution contained g of protein per liter of solution. Calculate the molar mass of the protein. Answer: In atmospheres, Π =.54 torr/760 torr/atm =.06x0-3 atm. From Π = MRT the molar concentration is M = Π/RT =.06x0-3 atm/0.006 L atm K - mol - /9.5 K =.x0-5 mol L -. The molar mass is then MM = g/.x0-5 mol =.45x0 3 g mol Which molecule has a stronger bond, CF or F? xplain your answer for credit. CF F σ * u (p z) σ * u (p z) π * g (p x) π * g (p y) π * g (p x) π * g (p y) p C πu (p x) σg (p z) πu (p y) p F p F πu (p x) p σg (p F z) πu (p y) σ * u (s) σ * u (s) s C s N σg (s) s C s N σg (s) CF C CF F F FF F Bond order: BO = 3 = ½ BO = 6 = stronger bond in CF (greater bond order) 0. Determine the rate law for the reaction NO (g) Br(g) NOBr(g) from the following initial rate study (you don t need to get a numerical value for k, just leave it as k ):
4 CH45 4 [NO] (mol L - ) [Br] (mol L - ) rate (L mol - sec - ) x x x0-6 Answer: xperiments &: when [NO] doubles the rate doubles the order with respect to NO is one. xperiments &3: when [Br] doubles the rate quadruples the order with respect to Br is two: rate = k [NO][Br] If it were requested: For experiment, to get the rate constant rate = k [NO][Br] or:.00x0-6 l mol - s - = k (.00 mol L - )(.00 mol L - ) giving k =.00x0-6 L 3 mol -3 s - Part. Answer 3 of the following 5 questions. If you answer more than 3 cross out the ones you wish not to be graded, otherwise only the first 3 will be graded. points each.. (a.) Draw an energy level diagram for the molecular orbitals for the CN - ion. (b.) Label each orbital with the type of orbital, sigma, or pi and bonding or anti-bonding. (c.) Fill the levels with the proper number of electrons, and (d.) calculate the bond order. CN σ * u (p z) π * g (p x) π * g (p y) p C πu (p x) σg (p z) πu (p y) p N σ * u (s) s C s N σg (s) CN C CN N Bond order: BO = = 3. NOBr decomposes according to NOBr (g) NO (g) ½ Br (g) With Kp = 0.5. If.0 atm of NOBr, 0. atm of NO, and 0.4 atm of Br are mixed, will any reaction occur? If a net reaction is observed, will NO be formed or consumed?
5 CH45 5 Answer: Q = PBr½ PNO PNOBr reverse direction. = (0.4 atm)½ (0. atm) atm = with Q > Kp the reaction runs in the 3. What is the molarity of 50.0% by weight NaOH solution? The density of the solution is.53 g ml -. (Molar Mass(NaOH) = 40.0 g mol - ) Answer: Assume 00 g of solution, which then contains 50.0 g of NaOH or.5 moles of NaOH. The volume of the solution is Vsoln = 00.0 g/dsoln = 00. g/.53 g ml - = ml or L. The final molarity is c = (moles solute)/vsoln = 9. mol L - 4. The rate constant for the following reaction is.05x0-4 sec - at 76 K. The rate constant increases to 7.x0-4 sec - at 34 K. Calculate the activation energy for the reaction: C4HO C4H6 HO Answer: ln k = a k R giving T T ln 7.x0-4.05x0-4 a =.34 J K - mol K 76. K.05 = a/.34 J K - mol - (-7.3x0-5 ) a = 9. kj mol - 5. NOBr decomposes according to NOBr (g) NO (g) Br (g) With Kp =.5. If.00 atm of NOBr is placed in a constant volume container, calculate the equilibrium pressure of Br. Answer: NOBr (g) NO (g) Br (g) initial.00 atm 0 0 change x x x equil.000 x x x Kp = PNO PBr PNOBr = x x =.5 cross multiplying gives: x =.5.5 x or x.5 x.5 = 0 solving: x = b ± b 4ac a =.5 ± (.5) 4(-.5) =.5 ± = atm
8. Relax and do well.
CHEM 1515 Exam II John II. Gelder October 14, 1993 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 8 different pages. The last two pages include a periodic table, a
More informationORBITAL DIAGRAM - A graphical representation of the quantum number "map" of electrons around an atom.
178 (MAGNETIC) SPIN QUANTUM NUMBER: "spin down" or "spin up" - An ORBITAL (region with fixed "n", "l" and "ml" values) can hold TWO electrons. ORBITAL DIAGRAM - A graphical representation of the quantum
More informationSolutions and Ions. Pure Substances
Class #4 Solutions and Ions CHEM 107 L.S. Brown Texas A&M University Pure Substances Pure substance: described completely by a single chemical formula Fixed composition 1 Mixtures Combination of 2 or more
More information(please print) (1) (18) H IIA IIIA IVA VA VIA VIIA He (2) (13) (14) (15) (16) (17)
CHEM 10113, Quiz 3 September 28, 2011 Name (please print) All equations must be balanced and show phases for full credit. Significant figures count, show charges as appropriate, and please box your answers!
More information8. Relax and do well.
CHEM 15 Exam II John II. Gelder March 4, 1999 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 7 different pages. The last two pages includes a periodic table, a solubility
More informationORBITAL DIAGRAM - A graphical representation of the quantum number "map" of electrons around an atom.
160 ORBITAL DIAGRAM - A graphical representation of the quantum number "map" of electrons around an atom. 4p 3d 4s 3p 3s 2p 2s 1s Each blank represents an ORBITAL, and can hold two electrons. The 4s subshell
More information-"l" also contributes ENERGY. Higher values for "l" mean the electron has higher energy.
175 - Giving the four parameters will uniquely identify an electron around an atom. No two electrons in the same atom can share all four. These parameters are called QUANTUM NUMBERS. PRINCIPAL QUANTUM
More informationCHEMICAL COMPOUNDS MOLECULAR COMPOUNDS
48 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified
More informationCHEM 10113, Quiz 5 October 26, 2011
CHEM 10113, Quiz 5 October 26, 2011 Name (please print) All equations must be balanced and show phases for full credit. Significant figures count, show charges as appropriate, and please box your answers!
More informationCHEMICAL COMPOUNDS MOLECULAR COMPOUNDS
48 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified
More informationINSTRUCTIONS: Exam III. November 10, 1999 Lab Section
CHEM 1215 Exam III John III. Gelder November 10, 1999 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 7 different pages. The last page includes a periodic table and
More informationCourse theme. Three hours of lab Complete E1 (Parts 1, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report.
Experiment Session 2 Electrons and Solution Color Three hours of lab Complete E (Parts, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report. Course theme There are structure and property
More informationThree hours of lab Complete E1 (Parts 1, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report. Course theme
Experiment 1 Session 2 Electrons and Solution Color Three hours of lab Complete E1 (Parts 1, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report. Course theme There are structure and property
More informationFall 2011 CHEM Test 4, Form A
Fall 2011 CHEM 1110.40413 Test 4, Form A Part I. Multiple Choice: Clearly circle the best answer. (60 pts) Name: 1. The common constituent in all acid solutions is A) H 2 SO 4 B) H 2 C) H + D) OH 2. Which
More informationVIIIA H PREDICTING CHARGE
58 IA PREDICTING CHARGE VIIIA H IIA IIIA IVA VA VIA VIIA You can reliably determine the charge using our method for Groups IA, IIA, IIIB, Aluminum, and the Group VA, VIA, and VIIA NONMETALS Li Be B C N
More information8. Relax and do well.
CHEM 1225 Exam I John I. Gelder February 4, 1999 Name KEY TA's Name Lab Section Please sign your name below to give permission to post your course scores on homework, laboratories and exams. If you do
More informationE5 Lewis Acids and Bases: lab 2. Session two lab Parts 2B, 3, and 4. Session one lab Parts 1and 2A. Aquo Complex Ions. Aquo Complex Ion Reactions
E5 Lewis Acids and Bases: lab 2 Session one lab Parts 1and 2A Part 2B. Complexation, Structure and Periodicity Compare the reactivity of aquo complex ions containing pre-transition, transition, and post-transition
More information-"l" also contributes ENERGY. Higher values for "l" mean the electron has higher energy.
170 - Giving the four parameters will uniquely identify an electron around an atom. No two electrons in the same atom can share all four. These parameters are called QUANTUM NUMBERS. PRINCIPAL QUANTUM
More informationE5 Lewis Acids and Bases: lab 2. Session two lab Parts 2B, 3, and 4. Session one lab Parts 1and 2A. Aquo Complex Ions
E5 Lewis Acids and Bases: lab 2 Session one lab Parts 1and 2A Session two lab Parts 2B, 3, and 4 Part 2B. Complexation, Structure and Periodicity Compare the reactivity of aquo complex ions containing
More informationCircle the letters only. NO ANSWERS in the Columns! (3 points each)
Chemistry 1304.001 Name (please print) Exam 4 (100 points) April 12, 2017 On my honor, I have neither given nor received unauthorized aid on this exam. Signed Date Circle the letters only. NO ANSWERS in
More information8. Relax and do well.
CHEM 1215 Exam III John III. Gelder November 11, 1998 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 7 different pages. The last page includes a periodic table and
More information8. Relax and do well.
CHEM 1314.03 Exam I John I. Gelder September 25, 1997 Name TA's Name Lab Section Please sign your name below to give permission to post, by the last 4 digits of your student I.D. number, your course scores
More informationWRITING AN IONIC FORMULA
WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example: If
More informationExample: If a simple ionic compound is made of these two ions, what is its formula? In the final formula, don't write the charges on the ions!
88 WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example:
More information8. Relax and do well.
CHEM 1225 Exam III John III. Gelder April 8, 1999 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 7 different pages. The last two pages includes a periodic table and
More informationCircle the letters only. NO ANSWERS in the Columns!
Chemistry 1304.001 Name (please print) Exam 5 (100 points) April 18, 2018 On my honor, I have neither given nor received unauthorized aid on this exam. Signed Date Circle the letters only. NO ANSWERS in
More informationLewis dot structures for molecules
1 Lewis dot structures for molecules In the dot structure of a molecule, - SHARED valence electrons are shown with dashes - one per pair. - UNSHARED valence electrons ("lone pairs") are represented by
More informationCHEMICAL COMPOUNDS MOLECULAR COMPOUNDS
48 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified
More information- A CHEMICAL BOND is a strong attractive force between the atoms in a compound. attractive forces between oppositely charged ions
CHEMICAL BONDS - A CHEMICAL BOND is a strong attractive force between the atoms in a compound. 3 TYPES OF CHEMICAL BOND Ionic bonds attractive forces between oppositely charged ions sodium chloride Covalent
More informationPartial Periodic Table of the Elements
Name (print clearly) Seat number Quiz 3 (100 points) Chemistry 1303.002 September 12, 2018 1. (15 points) One of the following reactions will occur, one will not. Determine which one occurs and then a.
More informationHalogens HALOGENS. Parts 2A and 2B. Chem : Feb. 19, 20 and March 3. Compare the properties and reactivity of the halogens and halides
Chem. 125-126: Feb. 19, 20 and March 3 Experiment 3 Session 2 (Three hour lab) Complete Experiment 3 Parts 2B and 3 Complete team report Complete discussion presentation Parts 2A and 2B Compare the properties
More informationVIIIA H PREDICTING CHARGE
58 IA PREDICTING CHARGE VIIIA H IIA IIIA IVA VA VIA VIIA You can reliably determine the charge using our method for Groups IA, IIA, IIIB, Aluminum, and the Group VA, VIA, and VIIA NONMETALS Li Be B C N
More information- A polar molecule has an uneven distribution of electron density, making it have ends (poles) that are slightly charged.
14 POLARITY and shape: - A polar molecule has an uneven distribution of electron density, making it have ends (poles) that are slightly charged. POLARITY influences several easily observable properties.
More information8. Relax and do well.
CHEM 1314 3;30 pm Theory Exam III John III. Gelder November 13, 2002 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 8 different pages. The last page include a periodic
More informationExperiment Three. Lab two: Parts 2B and 3. Halogens used in Parts 2 and 3. Lab one: Parts 1 and 2A. Halogens (Family VIIA) used in Parts 2 and 3
Experiment Three Lab one: Parts 1 and 2A Lab two: Parts 2B and 3 1 1A 1 H 1s 1 2 IIA 3 Li 2s 1 1 1 Na 3s 1 1 9 K 4s 1 3 7 Rb 5s 1 5 5 Cs 6s 1 8 7 Fr 7s 1 4 Be 2s 2 1 2 Mg 3s 2 3 IIIB 4 IVB 5 VB 6 VIB 7
More informationCHEM 10123/10125, Exam 2
CHEM 10123/10125, Exam 2 March 7, 2012 (50 minutes) Name (please print) Please box your answers, and remember that significant figures, phases (for chemical equations), and units do count! 1. (13 points)
More informationHANDOUT SET GENERAL CHEMISTRY II
HANDOUT SET GENERAL CHEMISTRY II Periodic Table of the Elements 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 IA VIIIA 1 2 H He 1.00794 IIA IIIA IVA VA VIA VIIA 4.00262 3 Li 6.941 11 Na 22.9898
More informationCHM 101 PRACTICE TEST 1 Page 1 of 4
CHM 101 PRACTICE TEST 1 Page 1 of 4 Please show calculations (stuffed equations) on all mathematical problems!! On the actual test, "naked answers, with no work shown, will receive no credit even if correct.
More information8. Relax and do well.
EM 1515.001-006 Exam II John II. Gelder March 5, 2002 Name TA's Name Section INSTRUTIONS: 1. This examination consists of a total of 8 different pages. The last three pages include a periodic table, a
More informationINSTRUCTIONS: CHEM Exam I. September 13, 1994 Lab Section
CHEM 1314.05 Exam I John I. Gelder September 13, 1994 Name TA's Name Lab Section Please sign your name below to give permission to post, by the last 4 digits of your student I.D. number, your course scores
More informationEXAMPLES. He VIA VIIA Li Be B C N O F Ne
59 IA EXAMPLES VIIIA H IIA IIIA IVA VA He VIA VIIA Li Be B C N O F Ne Na Mg IIIB IVB VB Al Si P VIB VIIB VIIIB IB IIB S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru
More informationAtomic weight: This is a decimal number, but for radioactive elements it is replaced with a number in parenthesis.
47 Blocks on the periodic table 11 Sodium 22.99 Atomic number: This is always a whole number. The periodic table is arranged by atomic number! Element symbol: A one or two letter abbreviation for the name
More informationWRITING AN IONIC FORMULA
55 WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example:
More informationK. 27 Co. 28 Ni. 29 Cu Rb. 46 Pd. 45 Rh. 47 Ag Cs Ir. 78 Pt.
1 IA 1 ydrogen 1.01 Atomic number Element symbol Element name Atomic mass VIIIA 1 1.01 IIA IIIA IVA VA VIA VIIA 2 e 4.00 Metalloids 3 Li 6.94 4 Be 9.01 5 B 10.81 6 C 12.01 7 N 14.01 8 O 16.00 9 F 19.00
More information... but using electron configurations to describe how aluminum bromide forms is a bit cumbersome! Can we simplify the picture a bit?
193... but using electron configurations to describe how aluminum bromide forms is a bit cumbersome! Can we simplify the picture a bit? LEWIS NOTATION / ELECTRON-DOT NOTATION - Lewis notation represents
More information7. Relax and do well.
CHEM 1215 Exam II John II. Gelder October 7, 1998 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 5 different pages. The last page includes a periodic table and a solubility
More information8. Relax and do well.
CHEM 1014 Exam I John I. Gelder September 16, 1999 Name TA's Name Lab Section Please sign your name below to give permission to post your course scores on homework, laboratories and exams. If you do not
More information- Atomic line spectra are UNIQUE to each element. They're like atomic "fingerprints".
- Atomic line spectra are UNIQUE to each element. They're like atomic "fingerprints". - Problem was that the current model of the atom completely failed to explain why atoms emitted these lines. An orbit
More information8. Relax and do well.
CHEM 34.02 and 34.03 Name Exam III John III. Gelder TA's Name November 5, 2000 Lab Section INSTRUCTIONS:. This examination consists of a total of 9 different pages. The last three pages include a periodic
More informationChemistry 121 FINAL EXAM
Page 1 of 11 Name: (Print) Surname Given Names Student Number: The Irving K. Barber School of Arts and Sciences Chemistry 121 FINAL EXAM Drs. P. Knoess, K. Perry and E. Neeland FRIDAY, Dec. 9, 2005 9:00
More informationThree hour lab. Chem : Sept Experiment 2 Session 2. Preparation Pre-lab prep and reading for E2, Parts 3-5
Chem.25-26: Sept.24-3 Experiment 2 Session 2 Preparation Pre-lab prep and reading for E2, Parts 3-5 Experiment 2 Session 2 Electrons and Solution Color Three hour lab Complete E2 (Parts - 5) Prepare discussion
More informationAtomic weight: This is a decimal number, but for radioactive elements it is replaced with a number in parenthesis.
47 Blocks on the periodic table 11 Sodium 22.99 Atomic number: This is always a whole number. The periodic table is arranged by atomic number! Element symbol: A one or two letter abbreviation for the name
More informationWRITING AN IONIC FORMULA
55 WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example:
More informationCHEMICAL COMPOUNDS. - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds!
69 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified
More information(FIRST) IONIZATION ENERGY
181 (FIRST) IONIZATION ENERGY - The amount of energy required to remove a single electron from the outer shell of an atom. - Relates to reactivity for metals. The easier it is to remove an electron, the
More informationBROOKLYN COLLEGE Department of Chemistry. Chemistry 1 Second Lecture Exam Nov. 27, Name Page 1 of 5
BROOKLYN COLLEGE Department of Chemistry Chemistry 1 Second Lecture Exam Nov. 27, 2002 Name Page 1 of 5 Circle the name of your lab instructor Kobrak, Zhou, Girotto, Hussey, Du Before you begin the exam,
More informationK. 27 Co. 28 Ni. 29 Cu Rb. 46 Pd. 45 Rh. 47 Ag Cs Ir. 78 Pt.
1 IA 1 ydrogen 1.01 Atomic number Element symbol Element name Atomic mass VIIIA 1 1.01 IIA IIIA IVA VA VIA VIIA 2 e 4.00 Metalloids 3 Li 6.94 4 Be 9.01 5 B 10.81 6 C 12.01 7 N 14.01 8 O 16.00 9 F 19.00
More informationINSTRUCTIONS: 7. Relax and do well.
EM 1314 Name Exam III TA Name John III. Gelder November 16, 1992 Lab Section INSTRUTIONS: 1. This examination consists of a total of 7 different pages. The last page includes a periodic table and some
More information8. Relax and do well.
CHEM 1314 Name Exam IV TA Name John IV. Gelder December 14, 1992 Lab Section INSTRUCTIONS: 1. This examination consists of a total of 9 different pages. The last three pages includes a periodic table and
More information- A CHEMICAL BOND is a strong attractive force between the atoms in a compound. attractive forces between oppositely charged ions
191 CHEMICAL BONDS - A CHEMICAL BOND is a strong attractive force between the atoms in a compound. 3 TYPES OF CHEMICAL BOND Ionic bonds attractive forces between oppositely charged ions sodium chloride
More information- Some properties of elements can be related to their positions on the periodic table.
179 PERIODIC TRENDS - Some properties of elements can be related to their positions on the periodic table. ATOMIC RADIUS - The distance between the nucleus of the atoms and the outermost shell of the electron
More informationHow many grams of sodium metal is required to completely react with 2545 grams of chlorine gas?
146 EXAMPLE PROBLEM: How many grams of sodium metal is required to completely react with 2545 grams of chlorine gas? 1 - Convert 2545 grams of chlorine gas to moles. Use formula weight. 2 - Convert moles
More informationExample: Helium has an atomic number of 2. Every helium atom has two protons in its nucleus.
59 Atomic terms - ATOMIC NUMBER: The number of protons in the atomic nucleus. Each ELEMENT has the SAME NUMBER OF PROTONS in every nucleus. In neutral atoms, the number of ELECTRONS is also equal to the
More informationThe Periodic Table of the Elements
The Periodic Table of the Elements All matter is composed of elements. All of the elements are composed of atoms. An atom is the smallest part of an element which still retains the properties of that element.
More informationPeriodic Table. - Mendeleev was able to predict the properties of previously unknown elements using his "periodic law" Modern periodic table
74 Periodic Table - Mendeleev (1869): --- When atoms are arranged in order of their atomic weight, some of their chemical and physical properties repeat at regular intervals (periods) --- Some of the physical
More information7. Relax and do well.
CHEM 1014 Exam III John III. Gelder November 18, 1999 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 7 different pages. The last page includes a periodic table and
More informationCLEARLY SHOW ALL WORK AND REASONING.
Name (print clearly) Seat number Quiz 4 (100 points) Chemistry 1303.002 October 17, 2018 1. (25points) Using the information below, find the enthalpy of formation ( H f ) for gaseous hydrogen chloride.
More informationLast 4 Digits of USC ID:
Chemistry 05 B Practice Exam Dr. Jessica Parr First Letter of last Name PLEASE PRINT YOUR NAME IN BLOCK LETTERS Name: Last 4 Digits of USC ID: Lab TA s Name: Question Points Score Grader 8 2 4 3 9 4 0
More information- A polar molecule has an uneven distribution of electron density, making it have ends (poles) that are slightly charged.
POLARITY and shape: - A polar molecule has an uneven distribution of electron density, making it have ends (poles) that are slightly charged. POLARITY influences several easily observable properties. -
More informationThree hour lab. Chem : Feb Experiment 2 Session 2. Experiment 2 Session 2 Electrons and Solution Color
Chem.25-26: Feb. 5 - Experiment 2 Session 2 Preparation Pre-lab prep and reading for E2, Parts 3-5 Experiment 2 Session 2 Electrons and Solution Color Three hour lab Complete E2 (Parts - 5) Prepare discussion
More informationCHEMICAL COMPOUNDS MOLECULAR COMPOUNDS
48 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified
More informationCHEM Come to the PASS workshop with your mock exam complete. During the workshop you can work with other students to review your work.
It is most beneficial to you to write this mock midterm UNDER EXAM CONDITIONS. This means: Complete the midterm in 1.5 hours. Work on your own. Keep your notes and textbook closed. Attempt every question.
More information1.02 Elements, Symbols and Periodic Table
.0 Elements, Symbols and Periodic Table Dr. Fred O. Garces Chemistry Miramar College.0 Elements, Symbols and the Periodic Table January 0 The Elements: Building block of Matter The periodic table of the
More information- Why are phase labels required? Because phase changes either absorb or release energy. ... what does this mean?
157 SINCE the enthalpy change does NOT depend on path, this means that we can use standard values for enthalpy to predict the heat change in reactions that we have not tested in a calorimeter. THERMOCHEMICAL
More information- When atoms share electrons, the electrons might not be EVENLY shared. Shared electrons may spend more time around one atomic nucleus than the other.
228 POLARITY - When atoms share electrons, the electrons might not be EVENLY shared. Shared electrons may spend more time around one atomic nucleus than the other. - When electrons are shared UNEVENLY,
More informationIONIC COMPOUNDS. - USUALLY form from metals combining with nonmetals, or from metals combining with metalloids
52 IONIC COMPOUNDS - USUALLY form from metals combining with nonmetals, or from metals combining with metalloids Examples: - almost always solid at room temperature, and usually have relatively high melting
More information7. Relax and do well.
CHEM 1215 Exam II John II. Gelder October 13, 1999 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 5 different pages. The last page includes a periodic table and a solubility
More informationHow many grams of sodium metal is required to completely react with 2545 grams of chlorine gas?
EXAMPLE PROBLEM: How many grams of sodium metal is required to completely react with 2545 grams of chlorine gas? 1 - Convert 2545 grams of chlorine to moles chlorine using formula weight 2 - Convert moles
More informationE5 Lewis Acids and Bases. Acids. Acids. Session one. Session two Lab: Parts 2B, 3 and 4
E5 Lewis Acids and Bases Session one Pre-lab (p.141) due at start of lab. First hour: Discussion of E4 Lab: Parts 1and 2A Session two Lab: Parts 2B, 3 and 4 Acids Bronsted: Acids are proton donors and
More informationPeriodic Table. Modern periodic table
41 Periodic Table - Mendeleev (1869): --- When atoms are arranged in order of their atomic weight, some of their chemical and physical properties repeat at regular intervals (periods) --- Some of the physical
More information02/05/09 Last 4 Digits of USC ID: Dr. Jessica Parr
Chemistry 05 B First Letter of PLEASE PRINT YOUR NAME IN BLOCK LETTERS Exam last Name Name: 02/05/09 Last 4 Digits of USC ID: Dr. Jessica Parr Lab TA s Name: Question Points Score Grader 2 2 9 3 9 4 2
More information- Light has properties of WAVES such as DIFFRACTION (it bends around small obstructions).
170 LIGHT wavelength Diffraction frequency = wavelengths / time = - Light has properties of WAVES such as DIFFRACTION (it bends around small obstructions). - Einstein noted that viewing light as a particle
More information610B Final Exam Cover Page
1 st Letter of Last Name NAME: 610B Final Exam Cover Page No notes or calculators of any sort allowed. You have 3 hours to complete the exam. CHEM 610B, 50995 Final Exam Fall 2003 Instructor: Dr. Brian
More information7. Relax and do well.
CHEM 1215 Exam II John II. Gelder October 7, 1998 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 5 different pages. The last page includes a periodic table and a solubility
More informationHANDOUT SET GENERAL CHEMISTRY I
HANDOUT SET GENERAL CHEMISTRY I Periodic Table of the Elements 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 IA VIIIA 1 2 H He 1.00794 IIA IIIA IVA VA VIA VIIA 4.00262 3 Li 6.941 11 Na 22.9898
More informationK. 27 Co. 28 Ni. 29 Cu Rb. 46 Pd. 45 Rh. 47 Ag Cs Ir. 78 Pt.
1 IA 1 H Hydrogen 1.01 Atomic number Element symbol Element name Atomic mass VIIIA 1 H 1.01 IIA IIIA IVA VA VIA VIIA 2 He 4.00 Metalloids 3 Li 6.94 4 Be 9.01 5 B 10.81 6 C 12.01 7 N 14.01 8 O 16.00 9 F
More informationThe exam must be written in ink. No calculators of any sort allowed. You have 2 hours to complete the exam. Periodic table 7 0
Email: The exam must be written in ink. No calculators of any sort allowed. You have 2 hours to complete the exam. CEM 610B Exam 3 Spring 2002 Instructor: Dr. Brian Pagenkopf Page Points 2 6 3 7 4 9 5
More informationVIIIA He IIA IIIA IVA VA VIA VIIA. Li Be B C N O F Ne. Na Mg VIB VIIB VIIIB IB IIB S. K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br
188 THE FIRST TWO PERIODIC TRENDS IN A NUTSHELL LARGER IONIZATION ENERGY SMALLER RADIUS IA H IIA IIIA IVA VA VIA VIIA VIIIA He Li Be B C N O F Ne Na Mg IIIB IVB VB Al Si P VIB VIIB VIIIB IB IIB S Cl Ar
More informationPeriodic Table. Modern periodic table
41 Periodic Table - Mendeleev (1869): --- When atoms are arranged in order of their atomic weight, some of their chemical and physical properties repeat at regular intervals (periods) --- Some of the physical
More informationE4 Acids, Bases, and Salts
E4 Acids, Bases, and Salts Session One of two session lab Complete Parts 1 and 2 in lab. If time allows, start or complete Part 3. Acids and Bases Q. Are acid-base properties of substances predictable
More informationAtomic terms. Example: Helium has an atomic number of 2. Every helium atom has two protons in its nucleus.
Atomic terms - ATOMIC NUMBER: The number of protons in the atomic nucleus. Each ELEMENT has the SAME NUMBER OF PROTONS in every nucleus. In neutral atoms, the number of ELECTRONS is also equal to the atomic
More informationCHEM 108 (Spring-2008) Exam. 3 (105 pts)
CHEM 08 (Spring-008) Exam. (05 pts) Name: --------------------------------------------------------------------------, CLID # -------------------------------- LAST NAME, First (Circle the alphabet segment
More informationChapter 12 The Atom & Periodic Table- part 2
Chapter 12 The Atom & Periodic Table- part 2 Electrons found outside the nucleus; negatively charged Protons found in the nucleus; positive charge equal in magnitude to the electron s negative charge Neutrons
More informationPutting it together... - In the early 20th century, there was a debate on the structure of the atom. Thin gold foil
36 Putting it together... - In the early 20th century, there was a debate on the structure of the atom. RUTHERFORD EXPERIMENT Where do the particles go? Radioactive material A few bounce back A few particles
More informationCHEM 130 Exp. 8: Molecular Models
CHEM 130 Exp. 8: Molecular Models In this lab, we will learn and practice predicting molecular structures from molecular formulas. The Periodic Table of the Elements IA 1 H IIA IIIA IVA VA VIA VIIA 3 5
More information4.01 Elements, Symbols and Periodic Table
.0 Elements, Symbols and Periodic Table Dr. Fred O. Garces Chemistry 00 Miramar College.0 Elements, symbols and the Periodic Table Aug The Elements: Building block of Matter The periodic table of the chemical
More information- Some properties of elements can be related to their positions on the periodic table.
180 PERIODIC TRENDS - Some properties of elements can be related to their positions on the periodic table. ATOMIC RADIUS - The distance between the nucleus of the atoms and the outermost shell of the electron
More informationSHAPES OF EXPANDED VALENCE MOLECULES
228 SHAPES OF EXPANDED VALENCE MOLECULES There are five atoms bonded to the central phosphorus atom, and they will attempt to get as far apart as possible from one another! The top and bottom atoms are
More informationAdvanced Placement. Chemistry. Integrated Rates
Advanced Placement Chemistry Integrated Rates 204 47.90 9.22 78.49 (26) 50.94 92.9 80.95 (262) 52.00 93.94 83.85 (263) 54.938 (98) 86.2 (262) 55.85 0. 90.2 (265) 58.93 02.9 92.2 (266) H Li Na K Rb Cs Fr
More information8. Relax and do well.
CHEM 1314.05 Exam II John II. Gelder October 18, 1994 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 9 different pages. The last three pages include a periodic table,
More information