Unit 4 Review Chemical Change
|
|
|
- Marilyn Price
- 5 years ago
- Views:
Transcription
1 1. Balance the following equations: Name Unit 4 Review Chemical Change a. NO + H2O NH3 + O2 b. (NH4)2Cr2O7 + AlCl3 Al2(Cr2O7)3 + NH4Cl c. C17H36 + O2 CO2 + H2O d. Co + H2SO4 Co2(SO4)3 + H2 e. P4 + Cl2 PCl3 f. H3PO4 + Ba(OH)2 Ba3(PO4)2 + H2O g. Al(CH3COO)3 Al + C + H2 + O2 2. Complete, balance and classify the following equations as synthesis, decomposition, single replacement, double replacement, neutralization or combustion. a. Al + Zn(NO3)2 b. C6H14 + O2 c. Na3PO4 + Ca(NO3)2 d. Mg(H2PO4)2 e. Cl2 + KI f. Al + F2 Page 1 of 9
2 g. Zn + Cu(ClO3)2 h. Co(NO3)3 + (NH4)2C2O4 i. C12H25OH + O2 j. Sr(OH)2 + HNO3 k. V + O2 (Assume combining capacity of V is 5+) l. Rb3AsO4 m. CsOH + H3PO4 n. Ni(NO3)2 + (NH4)3PO4 o. Al + H2CO3 p. MgSO4 + AgNO3 Page 2 of 9
3 3. State whether each of the following are exothermic or endothermic. a. HCl kj H + Cl Answer b. C12H22O O2 12CO2 + 11H2O kj Answer c. H2O(l) H2O(g) Answer d. Energy (kj) A + B AB Reaction Proceeding Answer e. C + D CD H= kj Answer f. E + F G + H= kj Answer 4. In an exothermic reaction, the surroundings get (warmer/cooler). 5. Define enthalpy 6. Why does a light stick glow brighter when it is heated? 7. Which reaction will be faster? 6M HCl with zinc or 3 M HCl with zinc WHY? Page 3 of 9
4 8. Use the following Potential Energy Diagram to answer the questions below: ABC 60 AB + C A + BC 0 Progress of Reaction a) Determine the Activation Energy for the forward reaction... kj b) Determine the Activation Energy for the reverse reaction... kj c) What is the Enthalpy Change ( H) forward the reaction?.. kj d) What is the Enthalpy Change ( H) reverse for reaction?.. kj the e) The forward reaction is thermic. f) The reverse reaction is thermic. g) Which species or set of species forms the Activated Complex? h) What is the formula for the activated complex? 9. State the meaning of Activation Energy Page 4 of 9
5 10. Use the following Potential Energy Diagram to answer the questions below: Potential Energy 300 ABC A + BC AB + C Progress of Reaction a) Determine the Activation Energy for the forward reaction... kj b) Determine the Activation Energy for the reverse reaction... kj c) What is the Enthalpy Change ( H) forward the reaction?.. kj d) What is the Enthalpy Change ( H) reverse for reaction?.. the kj e) The forward reaction is thermic. f) The reverse reaction is thermic. g) Which species or set of species forms the Activated Complex? 11. Given the balanced equation: 2 Si4H10 (l) + 13 O2 (g) 8 SiO2 (aq) + 10 H2O (g) a) What volume of oxygen (STP) is required to react with g of Si4H10? Page 5 of 9
6 Chemistry 11 b) What mass of SiO2 is formed when g of H20 are formed? c) How many molecules of H2O are formed when L of O2 are used at STP? d) What is the concentration of 25.0 ml SiO2 if ml of 1.78M Si4H10 is reacted? 12. Given the balanced equation: Al2C6 + 6 H2O 2 Al(OH)3 + 3CH4 (g) a) If 34.5 grams of Al2C6 is mixed with 72.0 grams of water, which reactant is in excess? Show by calculations. b) If 34.5 grams of Al2C6 is mixed with 72.0 grams of water, what mass of Al(OH)3 is formed? Page 6 of 9
7 c) If 34.5 grams of Al2C6 is mixed with 72.0 grams of water, what volume of CH4 is formed at STP? 13. Given the equation: 4 NH3 + 5 O2 4 NO + 6 H2O When 51.0 grams of NH3 is burned in an excess of oxygen, g of water are produced. a) Calculate the theoretical yield of H2O. b) Calculate the % yield of H2O. 14. Given the equation: N2 + 3 H2 2 NH3 When 4.0 grams of hydrogen is combined with an excess of nitrogen, a 92% yield of NH3 is obtained. a) Calculate the theoretical yield of NH3 b) Calculate the actual yield of NH3 Page 7 of 9
8 15. Given the balanced equation: 3 HCl(aq) + Fe(OH)3 (aq) 3 H2O(l) + FeCl3 (aq) a) It takes ml of 0.50 M HCl to titrate a 25.0 ml sample of a solution of Fe(OH)3. Calculate the [Fe(OH)3 ] b) What mass of Fe(OH)3 is needed to completely react with 10.0 ml of 0.50M HCl solution? c) What volume of 0.50M HCl is required to titrate a gram sample of iron (III) hydroxide? Page 8 of 9
9 16. Given the following balanced equation, answer the questions below it. 2C6H14(l) + 19O2(g) 12CO2(g) + 14H2O(l) a. If g of C6H14 is mixed with grams of oxygen gas, which reactant is limiting? (2 marks) b. How much is the other reactant in excess? Answer Answer Page 9 of 9
Chapter 11 Practice Test
Chapter 11 Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. *You will need your own calculator for blast from the past questions. 1. Some of
AP Chemistry. Mole, Molecular Formula Review One Mole = o This is Avogadro s number. Molar Mass: The mass of one mole of a substance in grams.
AP Chemistry Ms Ye Name Date Block Mole, Review One Mole = o This is Avogadro s number Molar Mass: The mass of one mole of a substance in grams Percent Composition: Identifies the elements present in a
Balancing Equations Notes
. Unit 9 Chemical Equations and Reactions What is a Chemical Equation? A Chemical Equation is a written representation of the process that occurs in a chemical reaction. A chemical equation is written
WORKSHEET Mole Fraction
NAME: DATE: PERIOD: WORKSHEET Mole Fraction 1. What is the mole fraction of sodium chloride in a solution containing 0.23 moles of NaCl and 5.5 moles of water? 2. What is the mole fraction of oxygen in
Balancing Equations Notes
. Unit 6 Chemical Equations and Reactions What is a Chemical Equation? A Chemical Equation is a written representation of the process that occurs in a chemical reaction. A chemical equation is written
THE MOLE - PART 2. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.
THE MOLE - PART 2 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Which one of the following statements is a quantitative observation? a.
A Getting-It-On Review and Self-Test Formulas and Equations
A Getting-It-On Review and Self-Test Formulas and Equations The mole is defined as a (1) of things. To three significant figures, this number has the value (2). Atomic weights are based on a mole of (3).
15.0 g Fe O 2 mol Fe 55.8 g mol Fe = g
CHAPTER Practice Questions.1 1 Mg, O, H and Cl (on each side).. BaCl (aq) + Al (SO ) (aq) BaSO (s) + AlCl (aq).5 0.15 mol 106 g mol 1 = 1. g 15.0 g Fe O mol Fe 55.8 g mol Fe = 10.9 g 1 159.7 g mol FeO
Name. Practice Test 2 Chemistry 111
Name Practice Test 2 Chemistry 111 1) In the aqueous reaction of K 2 SO 4 (aq) + Ba(NO 3 ) 2 (aq) BaSO 4 (s) + 2KNO 3 (aq), which ions are the spectator ions? A) Ba 2+ 2- and SO 4 B) Ba 2+ and K + C) Ba
HonorsChemistry 2nd Semester Review MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Exam Name HonorsChemistry 2nd Semester Review MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which process releases energy? 1) A) bond formation
1. Parts of Chemical Reactions. 2 H 2 (g) + O 2 (g) 2 H 2 O(g) How to read a chemical equation
Unit 6 Chemical Reactions 1. Parts of a Chemical Reaction 2. Indicators of a Chemical Reaction 3. Enthalpy 4. Balancing Chemical Equations 5. Word Equations 6. Classifying Chemical Reactions 7. Predicting
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Magnesium and nitrogen react in a combination reaction to produce magnesium nitride:
Chemical Reactions. Chemical Reactions 5 signs/evidence of chemical reactions:
Chemical Reactions Chemical Reactions 5 signs/evidence of chemical reactions: Chemical Reaction: a process in which one or more substances are converted into new substances with different chemical and
Review Package #2 Measurement and Communication The Mole Chemical Reactions and Equations Stoichiometry
Chemistry 11 Review Package #2 Measurement and Communication The Mole Chemical Reactions and Equations Stoichiometry 1. Measurement and Communication: A. Scientific Notation: - Conversion of numbers from
Study Guide: Stoichiometry
Name: Study Guide: Stoichiometry Period: **YOUR ANSWERS MUST INCLUDE THE PROPER NUMBER OF SIG FIGS AND COMPLETE UNITS IN ORDER TO RECEIVE CREDIT FOR THE PROBLEM.** BALANCE THE FOLLOWING EQUATIONS TO USE
2. Indicators of Chemical Rxns. Abbreviations of State (g) gas (l) liquid (s) solid (aq) aqueous a substance dissolved in water
Unit 6 Chemical Reactions 1. Parts of a Chemical Reaction 2. Indicators of a Chemical Reaction 3. Enthalpy 4. Balancing Chemical Equations 5. Word Equations 6. Classifying Chemical Reactions 7. Predicting
1) When the reaction shown is balanced, there are atoms of oxygen and atoms of hydrogen on each side.
CHEM102 Chemistry II Spring 11-12 Mid-term Exam/Faculty of Agricultural Sciences and Technologies Student Registration No: Instructor: Prof.Dr.Hüseyin Oğuz Student Name-Surname: Dept. of Computer Information
Answer questions 1a 1d. Color leaf one the color that corresponds to the answer that is used twice.
Station 1 Answer questions 1a 1d. Color leaf one the color that corresponds to the answer that is used twice. Outline the leaf in one of the other colors. Polka-dot the leaf in the third color. 1a. Which
Chemistry Spring 2018 Final Exam Review
Name Date Period Chemistry Spring 2018 Final Exam Review TURN THIS COMPLETED REVIEW IN TO YOUR TEACHER BY DAY OF YOUR FINAL FOR A 5 point FINAL EXAM BONUS Unit #7 Moles 1. What is a mole? 2. What is molar
Lesson 01 and 02: Introduction to Chemical Reaction Equations. 01 Chemical Reactions
Chemistry 11, Chemical Reactions, Unit 05 1 Lesson 01 and 02: Introduction to Chemical Reaction Equations 01 Chemical Reactions A chemical reaction is a process by which one or more substances may be transformed
Chemistry 150/151 Review Worksheet
Chemistry 150/151 Review Worksheet This worksheet serves to review concepts and calculations from first semester General Chemistry (CHM 150/151). Brief descriptions of concepts are included here. If you
4. Most chloride salts are soluble. Identify an exception to this generalization. a. FeCl2 b. CaCl2 c. MgCl2 d. PbCl2 e. BaCl2
1. Balance the chemical equation associated with the complete combustion of benzene (C6H6) in oxygen. How many moles of oxygen will be required to completely combust a 0.96 mole sample of benzene? C6H6
Chemical Reaction Defn: Chemical Reaction: when starting chemical species form different chemicals.
Chemistry 11 Notes on Chemical Reactions Chemical Reaction Defn: Chemical Reaction: when starting chemical species form different chemicals. Evidence to indicate that a chemical reaction has occurred:
Chemical Reactions Unit
Name: Hour: Teacher: ROZEMA / Chemistry Chemical Reactions Unit 1 P a g e 2 P a g e 3 P a g e 4 P a g e 5 P a g e 6 P a g e Chemistry Balancing Equations Balance the following equations by inserting the
6. Which will react faster: Magnesium and 2M hydrochloric acid, or Magnesium and 0.5M hydrochloric acid?
REACTION RATES WORKSHEET WS#1 1. Identify the three components of collision theory. What are the three factors that must be true for a collision to be successful? a. b. c. 2. Do all collisions result in
The Factors that Determine the Equilibrium State
The Factors that Determine the Equilibrium State The equilibrium state (or the ratio of products to reactants) is determined by two factors: 1. Energy Systems tend to move toward a state of minimum potential
Sophomore AP Chem Practice Problems
Due on 8/17/18 Sophomore AP Chem Practice Problems Scientific notation and significant figures Determine the number of Significant Figures in the following numbers: 00034 2431. 8900 0.0094 Convert the
CHEMISTRY Midterm #2 October 26, Pb(NO 3 ) 2 + Na 2 SO 4 PbSO 4 + 2NaNO 3
CHEMISTRY 123-02 Midterm #2 October 26, 2004 The total number of points in this exam is 100. The total exam time is 50 min. Good luck! PART I: MULTIPLE CHOICE (Each multiple choice question has a 2-point
Chemical Reaction Defn: Chemical Reaction: when starting chemical species form different chemicals.
Chemical Reaction Defn: Chemical Reaction: when starting chemical species form different chemicals. Evidence to indicate that a chemical reaction has occurred: Temperature change Different coloured materials
Stoichiometric Calculations
Slide 1 / 109 Slide 2 / 109 Stoichiometric Calculations Slide 3 / 109 Table of Contents Click on the topic to go to that section Stoichiometry Calculations with Moles Stoichiometry Calculations with Particles
Stoichiometric Calculations
Slide 1 / 109 Slide 2 / 109 Stoichiometric Calculations Slide 3 / 109 Slide 4 / 109 Table of Contents Stoichiometry Calculations with Moles Click on the topic to go to that section Stoichiometry Calculations
5. Solve the following a) What energy is required to heat 55.5 g of carbon from -10 C to 47 C (Ccarbon = 0.71 J/g C)
Ch.10 - Energy 1. How is the concept of energy defined? Name: Period: 2. What does temperature measure? 3. Explain what is meant by the terms exothermic and endothermic. 4. What is meant by the specific
Chemistry 11 Final Exam Review. 3. Make sure you review your Safety Test from the beginning of the semester.
Chemistry 11 Final Exam Review 1. Label each symbol: 2. What are the three things needed for combustion to occur? 3. Make sure you review your Safety Test from the beginning of the semester. 4. Change
9. The ratio of the volume of nitrogen to that of the ammonia in the reaction N2 + 3 H2 2 NH3 is 1) 1:2; 2) 1:3; 3) 3:2; 4) 2:3.
1. In a balanced chemical equation l) coefficients are equal; 2) atoms are conserved; 3) molecules are equal; 4) energy is always produced; 5) none of these. 2. Which of the following statements about
Concentration 0. 5 M solutions 1. 0 M solutions. Rates Fast Slow. Which factor would account for the faster reaction rate in Experiment 1?
72. Consider the following experimental results: Experiment 1 Experiment 2 2+ - - 4 2 2 4 aq Reactants Fe ( aq) + MnO4 ( aq) MnO ( aq) + H C O ( ) Temperature 20 C 40 C Concentration 0. 5 M solutions 1.
Chemistry B11 Chapter 5 Chemical reactions
Chapter 5 Chemical reactions Chemical reactions are classified into five groups: A + B AB Synthesis reactions (Combination) H + O H O AB A + B Decomposition reactions (Analysis) NaCl Na +Cl A + BC AC +
CHM 2040 IA Final Review Fall 2017
CHM 2040 IA Final Review Fall 2017 1. Classify according to composition A). Oxygen gas -Element (Pure substance) B). Sand Heterogeneous mixture C). Bronze Homogenous mixture D). Calcium sulfate crystals
Chem 11 UNIT 3: STOICHIOMETRY Name:
Chem 11 UNIT 3: STOICHIOMETRY Name: Ms. Pirvu Period: Writing & Balancing Equations Chemical reactions can be described by chemical equations. Recall Law of Conservation of Mass mass cannot be nor. This
Chapter 8. Chemical Equations. Flames and sparks result when aluminum foil is dropped Into liquid bromine.
Chapter 8 Chemical Equations Flames and sparks result when aluminum foil is dropped Into liquid bromine. Introduction to General, Organic, and Biochemistry 10e John Wiley & Sons, Inc Morris Hein, Scott
SCH4U Chemistry Review: Fundamentals
SCH4U Chemistry Review: Fundamentals Particle Theory of Matter Matter is anything that has mass and takes up space. Anything around us and in the entire universe can be classified as either matter or energy.
Word Equations. Symbols used in equations. Unit 7: Chemical Reactions. hydrogen peroxide water + oxygen
Unit 7: Chemical Reactions Chemical reactions involve a reorganization of the atoms in one or more substances. Can be represented in different ways 1 Word Equations hydrogen peroxide reacts to produce
Review of Chemistry 11
Review of Chemistry 11 HCl C 3 H 8 SO 2 NH 4 Cl KOH H 2 SO 4 H 2 O AgNO 3 PbSO 4 H 3 PO 4 Ca(OH) 2 Al(OH) 3 P 2 O 5 Ba(OH) 2 CH 3 COOH 1. Classify the above as ionic or covalent by making two lists. Describe
Name: Date: M O L A R M A S S & P E R C E N T C O M P O S I T I O N
Name: Date: M O L A R M A S S & P E R C E N T C O M P O S I T I O N I. Molar Masses Given a periodic table, you should be able to calculate the molecular mass (in amu s) or the molar mass (in grams) for
Acid Base Review. Page 1
1. Which substance, when dissolved in water, forms a solution that conducts an electric current? A) C2H5OH B) C6H12O6 C) C12H22O11 D) CH3COOH 2. A substance is classified as an electrolyte because A) it
Practice Test. Moles & Stoich. Page What is the total number of nitrogen atoms in 0.25 mole of NO2 gas? (1)
1. What is the total number of nitrogen atoms in 0.25 mole of NO2 gas? (1) 1.5 10 23 (3) 3.0 10 23 (2) 6.0 10 23 (4) 1.2 10 24 2. Which quantity of O2 contains exactly 3.01 10 23 molecules? (1) 0.250 mole
7 Chemical Reactions and Quantities Practice Problems
7 Chemical Reactions and Quantities Practice Problems I m trying a different set up for the practice problems. This still contains the practice problems you need to master for the test. I ve organized
Thermochemistry HW. PSI Chemistry
Thermochemistry HW PSI Chemistry Name Energy 1) Objects can possess energy as: (a) endothermic energy (b) potential energy A) a only B) b only C) c only D) a and c E) b and c (c) kinetic energy 2) The
BICOL UNIVERSITY. College of Science Department of Chemistry. CHEM 1 GENERAL CHEMISTRY LECTURE HANDOUT Ver. 1.1 α
BICOL UNIVERSITY College of Science Department of Chemistry CHEM 1 GENERAL CHEMISTRY LECTURE HANDOUT Ver. 1.1 α 20110307 1 mole = 6.022 x 10 23 of molecules (Avogadro's number) A mole is similar to a term
Topic 1 Review. Ms. Kiely Coral Gables Senior High IB Chemistry SL
Topic 1 Review Ms. Kiely Coral Gables Senior High IB Chemistry SL Bell-Ringer A 4 g sample of sodium hydroxide, NaOH, is dissolved in water and made up to 500 cm³ of aqueous solution. What is the concentration
Balancing CHEMICAL EQUATIONS
Balancing CHEMICAL EQUATIONS CHEMICAL REACTIONS involves a chemical change in the identity of one or more chemical species Ex. Rusting of iron (Fe): chemical rxn btwn water and iron involve the breaking
Unit 5: Chemical Equations and Reactions & Stoichiometry
pg. 10 Unit 5: Chemical Equations and Reactions & Stoichiometry Chapter 8: Chemical Equations and Reactions 8.1: Describing Chemical Reactions Selected Chemistry Assignment Answers (Section Review on pg.
1.1 Introduction to the Particulate Nature of Matter and Chemical Change MATTER. Homogeneous (SOLUTIONS)
TOPIC 1: STOICHIOMETRIC RELATIONS 1.1 Introduction to the Particulate Nature of Matter and Chemical Change MATTER Mass Volume Particles Particles in constant motion MATTER Pure Matters Mixtures ELEMENTS
Chapter 7 - Chemical Reactions
Chapter 7 - Chemical Reactions Evidence of a Chemical Reaction If we could see the atoms and molecules that compose matter, we could easily identify a chemical reaction: Atoms combine with other atoms
REVIEW QUESTIONS Chapter 3
Chemistry 101 ANSWER KEY REVIEW QUESTIONS Chapter 3 1. Using only a periodic table, assign charges for each ion below, then complete the table with formulas and names for compounds formed by the combination
CHEM 200/202. Professor Jing Gu Office: EIS-210. All s are to be sent to:
CHEM 200/202 Professor Jing Gu Office: EIS-210 All emails are to be sent to: chem200@mail.sdsu.edu My office hours will be held in GMCS-212 on Monday from 9 am to 11 am or by appointment. ANNOUNCEMENTS
Chemistry 11 Course Review
Introduction to Chemistry 1. 0.0006 mm =? µm Chemistry 11 Course Review 6. A 0.0460 L piece of copper has a mass of 410.32 g. Calculate the density of copper in g/ml. 2. 0.054 ml =? nl 3. 3.5 µg/l =? mg/ml
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) When the following equation is balanced, the coefficients are. 1) NH3 (g) + O2 (g) NO2
CHE 105 FA17 Exam 2. How many moles of beryllium are in 15.0 grams of Be?
CHE 105 FA17 Exam 2 Your Name: Your ID: Question #: 1 How many moles of beryllium are in 150 grams of Be? A 66 B 13515 C 901 D 0601 Question #: 2 Vanillin, C8H8O3, is the molecule responsible for the vanilla
3 What Happens When Chemicals Are Put Together?
1 COMBUSTION REACTIONS Write the balanced chemical equations for the combustion of the following fuels: propane, C H + 5O fi CO + 4H O butane, C 4 H 10 + 1 / O fi 4CO + 5H O ethanol, C H 5 OH + O fi CO
Part 01 - Assignment: Introduction to Acids &Bases
Part 01 - Assignment: Introduction to Acids &Bases Classify the following acids are monoprotic, diprotic, or triprotic by writing M, D, or T, respectively. 1. HCl 2. HClO4 3. H3As 4. H2SO4 5. H2S 6. H3PO4
2. What is the molarity of g of H2SO4 dissolved in 1.00 L of solution? g H2SO4 1 mol H2SO4 = M H2SO4 1 L 98.
8.A Stoichiometry: Molarity Instructions: ON A SEPARATE SHEET OF PAPER, given the following data, perform the following molarity calculations. Remember, Sig Figs, NW = NC, Boxed Answers and N 3 (this includes
Chemical changes. All exothermic reactions release heat energy to the surroundings. Heat given out. Products. Progress of reaction
Chemical changes 6.1 Energetics of a reaction All chemical reactions involve an energy change. Energy is taken in or given out in the form of heat. So the reactions are divided into 2 groups Exothermic
CHEMICAL REACTIONS WORDS, SYMBOLS AND ABBREVIATIONS
CHEMICAL REACTIONS All chemical reactions have two parts: (1) A substance that undergoes a reaction is called a. In other words, reactants are the substances you start with. (2) When reactants undergo
2 nd Semester Study Guide 2017
Chemistry 2 nd Semester Study Guide 2017 Name: KEY Unit 6: Chemical Reactions and Balancing 1. Draw the remaining product 2. Write a balanced equation for the following reaction: The reaction between sodium
Chemistry 2202 Stoichiometry Unit Retest Review Guide
Chemistry 2202 Stoichiometry Unit Retest Review Guide Chapter 2: The Mole Pgs. 42 77 You should be able to: 1. Define the term molar mass and calculate the molar mass of any given element or compound.
CHAPTER SIX THERMOCHEMISTRY. Questions
CHAPTER SIX Questions 9. A coee-cup calorimeter is at constant (atmospheric) pressure. The heat released or gained at constant pressure is H. A bomb calorimeter is at constant volume. The heat released
Balancing Equations Notes
. Unit 7 Chemical Equations and Reactions What is a Chemical Equation? A is a written representation of the process that occurs in a chemical reaction. A chemical equation is written with the (starting
Spring Semester Final Exam Study Guide
Honors Chemistry Name Period AlCl3 Cu2S NaCN HI PCl3 CrBr3 Naming and Formula Writing 1. Write the name or formula for each of the following: HClO2 (NH4)2SO4 I4O10 H3N NiN H3PO4 Mercury (II) bromide Phosphorous
Sample Exam 2 Chapters 4, 5, 7 Show ALL work for FULL credit!!
CHM151 Name: KEY Sample Exam 2 Chapters 4, 5, 7 Show ALL work for FULL credit!! 1. How many valence electrons are there in the molecule disilicon hexahydride, Si 2 H 6? a. 8 b. 14 c. 18 d. 20 2. What is
CHE 105 Fall 16 - Exam 2
CHE 105 Fall 16 - Exam 2 Your Name: Your ID: Question #: 1 Calculate the number of atoms in a 4.54 g sample of CH4. A. 25 B. 8.52 10 23 C. 2.27 10 23 D. 0.295 Question #: 2 What is the name of BaCl2? 1
8 Chemical Equations. Flames and sparks result when aluminum foil is dropped into liquid bromine.
8 Chemical Equations Flames and sparks result when aluminum foil is dropped into liquid bromine. Chapter Outline 8.1 The Chemical Equation 8.2 Writing and Balancing Chemical Equations 8.3 Types of Chemical
Chemistry 12 JANUARY Course Code = CH. Student Instructions
MINISTRY USE ONLY MINISTRY USE ONLY Place Personal Education Number (PEN) here. Place Personal Education Number (PEN) here. MINISTRY USE ONLY Chemistry 12 2002 Ministry of Education JANUARY 2002 Course
REVIEW QUESTIONS Chapter The alcohol in gasohol burns according to the equation shown below:
Chemistry 101 REVIEW QUESTIONS Chapter 4 1. The alcohol in gasohol burns according to the equation shown below: C2H5OH (l) + 3 O2 (g) 2 CO2 (g) + 3 H2O l) How many grams of CO2 are produced when 3.00 g
Physical Change - alters the form or appearance of a substance but does not change it into a new, different substance
Chemical Reactions Physical Change - alters the form or appearance of a substance but does not change it into a new, different substance Chemical Change - forms one or more new substances with properties
Chemistry 3202 Pre-Public Examination May 2012 Name:
Chemistry 3202 Pre-Public Examination May 2012 Name: Section A: Multiple Choice This section contains 40 multiple choice covering concepts from the entire course. Please answer all multiple choice items
Chapter 7 Chemical Reactions
Chapter 7 Chemical Reactions Chemical Equation --> is a representation of a chemical reaction in which the reactants and products are expressed as formulas Reactants --> substances that undergo change
Additional Calculations: 10. How many joules are required to change the temperature of 80.0 g of water from 23.3 C to 38.8 C?
Additional Calculations: 10. How many joules are required to change the temperature of 80.0 g of water from 23.3 C to 38.8 C? q = m C T 80 g (4.18 J/gC)(38.8-23.3C) = 5183 J 11. A piece of metal weighing
No Brain Too Small CHEMISTRY Energy changes ( ) & Expired ( ) QUESTIONS QUESTION 1 (2016:3)
QUESTION 1 (2016:3) QUESTIONS (iii) Pentane combustion: C5H12(l) + 8O2(g) 5CO2(g) + 6H2O(l) Δr H o = 3509 kj mol 1 Hexane, C6H14, like pentane, will combust (burn) in sufficient oxygen to produce carbon
AP Questions: Thermodynamics
AP Questions: Thermodynamics 1970 Consider the first ionization of sulfurous acid: H2SO3(aq) H + (aq) + HSO3 - (aq) Certain related thermodynamic data are provided below: H2SO3(aq) H + (aq) HSO3 - (aq)
Funsheet 3.0 [WRITING & BALANCING EQUATIONS] Gu/R. 2017
![Funsheet 3.0 [WRITING & BALANCING EQUATIONS] Gu/R. 2017](/thumbs/80/82478584.jpg "Funsheet 3.0 [WRITING & BALANCING EQUATIONS] Gu/R. 2017")
Funsheet 3.0 [WRITING & BALANCING EQUATIONS] Gu/R. 2017 Balance the following chemical equations. Remember, it is not necessary to write "1" if the coefficient is one. 1. N 2 + H 2 NH 3 2. KClO 3 KCl +
Unit Two Worksheet WS DC U2
Unit Two Worksheet WS DC U2 Name Period Short Answer [Writing]. Write skeleton equations representing the following reactions and then balance them. Then identify the reaction type. Include all needed
1. Which type of bond involves the transfer of electrons from one atom to another? A. Hydrogen bond C. Metallic bond B. Ionic bond D.
1. Which type of bond involves the transfer of electrons from one atom to another? A. Hydrogen bond C. Metallic bond B. Ionic bond D. Covalent bond 2. Ethene (C 2 H 4 ) and cyclohexane (C 6 H 12 ) have
JOHN BURKE HIGH SCHOOL
JOHN BURKE HIGH SCHOOL Chemistry 2202 Midterm Examination January, 2013 Instructions: Part I: Multiple Choice: Choose the best answer to each item. Place all answers on the Answer Sheet provided. 40 marks
AP CHEMISTRY THINGS TO KNOW
AP CHEMISTRY THINGS TO KNOW Diatomic Molecules H2-hydrogen gas (do not write H) N2-nitrogen gas (do no write N) O2-oxygen gas (do not write O) F2-fluorine gas (do not write F) Cl2-chlorine gas (do not
CHM 2040 IA Final Review Spring 2018
CHM 2040 IA Final Review Spring 2018 Disclaimer: This guide should be utilized as a supplement to your studying and not entirely relied upon for your success. You are ultimately responsible for all the
UNIT 1 Chemical Reactions Part II Workbook. Name:
UNIT 1 Chemical Reactions Part II Workbook Name: 1 Molar Volume 1. How many moles of a gas will occupy 2.50 L at STP? 2. Calculate the volume that 0.881 mol of gas at STP will occupy. 3. Determine the
Useful Information to be provided on the exam: 1 atm = 760 mm Hg = 760 torr = lb/in 2 = 101,325 Pa = kpa. q = m C T. w = -P V.
Chem 101A Study Questions, Chapters 5 & 6 Name: Review Tues 10/25/16 Due 10/27/16 (Exam 3 date) This is a homework assignment. Please show your work for full credit. If you do work on separate paper, attach
Chemistry 12 Provincial Workbook Unit 01: Reaction Kinetics. Multiple Choice Questions
R. Janssen, MSEC Chemistry 1 Provincial Workbook (Unit 01), P. 1 / 68 Chemistry 1 Provincial Workbook Unit 01: Reaction Kinetics Multiple Choice Questions 1. Which of the following describes what happens
5.7 Quantity Relationships in Chemical Reactions (Stoichiometry)
5.7 Quantity Relationships in Chemical Reactions (Stoichiometry) We have previously learned that atoms combine in simple whole number ratios to form compounds. However, to perform a chemical reaction,
CHEMISTRY 12 UNIT II EQUILIBRIUM D Learning Goals
CHEMISTRY 12 UNIT II EQUILIBRIUM D Learning Goals 1. Chemical equilibrium is said to by dynamic because a. The reaction proceeds quickly b. The mass of the reactants is decreasing c. The macroscopic properties
Chemical Reactions. Writing chemical reactions Types of chemical reactions Reactions in aqueous solutions. (ionic equations and solubility rules)
Chemical Reactions Writing chemical reactions Types of chemical reactions Reactions in aqueous solutions (ionic equations and solubility rules) Writing Equations REACTANTS PRODUCTS gold (III) sulfide is
Write equilibrium law expressions from balanced chemical equations for heterogeneous and homogeneous systems. Include: mass action expression.
Equilibrium 1 UNIT 3: EQUILIBRIUM OUTCOMES All important vocabulary is in Italics and bold. Relate the concept of equilibrium to physical and chemical systems. Include: conditions necessary to achieve
Review Exam 2. 2.What is the mass of 4 atom(s) of copper in grams? A) g B) g C) g D) g E) 4.
Review Exam 2 1.Naturally occurring element X exists in three isotopic forms: X-28 (27.977 amu, 92.23% abundance), X-29 (28.976 amu, 4.67% abundance), and X-30 (29.974 amu, 3.10% abundance). Calculate
ACIDS AND BASES 4/19/15. 1) Given the reactions:
NAME: ACIDS AND BASES 4/19/15 ROW PD 1) Given the reactions: (A) NH3(g) + H2O(l) NH4 + + OH (B) HCl + H2O (l) H3O + + Cl As shown in equations (A) and (B) and based on the Bronsted theory, water is an
Chemistry 116 Pre-test Some questions from Chem 115 Final exam; Fall 2014
1. The mass of a sample is 550 milligrams. Which of the following expresses that mass in kilograms? a. 5.5 10 8 kg b. 5.5 10 5 kg c. 5.5 10 4 kg d. 5.5 10 6 kg e. 5.5 10 1 kg 2. Select the answer that
Chapter 4. Properties of Aqueous Solutions. Electrolytes in Aqueous Solutions. Strong, weak, or nonelectrolyte. Electrolytic Properties
Chapter 4 Reactions in Aqueous Solution Observing and Predicting Reactions How do we know whether a reaction occurs? What observations indicate a reaction has occurred? In your groups, make a list of changes
CHAPTER 8 CHEMICAL REACTIONS AND EQUATIONS
CHAPTER 8 CHEMICAL REACTIONS AND EQUATIONS CHEMICAL REACTIONS Occurs when matter combines or breaks apart to produce new kinds of matter with different properties with a change in energy. EVIDENCE FOR
Chapter 4: Types of Chemical reactions and Solution Stoichiometry
Chapter 4: Types of Chemical reactions and Solution Stoichiometry 4.1 Water, The Common Solvent State why water acts as a common solvent. Draw the structure of water, including partial charge. Write equations
CH 221 Sample Exam Exam II Name: Lab Section:
Exam II Name: Lab Section: Part I: Multiple Choice Questions (100 Points) Use a scantron sheet for Part I. There is only one best answer for each question. 1. When methanol undergoes complete combustion,
CHE 105 Spring 2018 Exam 2
CHE 105 Spring 2018 Exam 2 Your Name: Your ID: Question #: 1 A penny contains 373 x 10 2 moles of zinc How many atoms of zinc are in a penny? A 225 x 10 22 atoms B 221 x 10 23 atoms C 375 x 10 22 atoms