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Chemistry 12: First Assignment You need the reading booklet in order to complete all parts of this assignment. It should be downloaded from this link: https://sailacademy.ca/wp-content/uploads/2018/05/chemistry-12-sa_feb2018-readingbooklet.pdf First Assignment has 2 Parts: Part A: Unit 1 Lesson 1 - Reaction Rate Defined and Factors Affecting Reaction Rate {Part 1 & Part 2} (There are 2 quizzes that need to be done here. Part 1 which has four true and false questions and part 2 that has ten multiple choice questions. The reading material for these questions are in the reading booklet which needs to be downloaded from the above link) Unit 1 Lesson 2 Collision Theory (Here you just have one multiple choice question to complete that is worth 2 marks) Part B: Practice Work Questions Exercises #1 22 & Answer key. Please hand write answers to these questions ***showing all your work step by step.*** This first assignment is worth 5% of your total grade You can use calculators and Chemistry 12 Formula sheets throughout this course The course demonstrates the following Learning Standards following the completion of this First Assignment: Dynamic Equilibrium Some chemical reactions are reversible and proceed to equilibrium. Dynamic equilibrium can be altered by changing the surrounding conditions. Solubility Equilibrium Saturated solutions are systems in equilibrium. Acids and Bases The strength of an acid or base depends on the degree of dissociation of its ions. Weak acids, weak bases, and buffers are systems in equilibrium.
Oxidation-Reduction Reduction and oxidation are complementary processes that involve the gain or loss of electrons. Redox reactions have implications for resource development and for the environment. Unit 1 Lesson 1 - Reaction Rate Defined and Factors Affecting Reaction Rate Please read Pages 2-6 in the reading booklet and then come back here to complete Unit 1 Lesson 1; Part 1 and Part 2 quiz questions Unit 1 Lesson 1 Quiz Part 1 - Instructions - This is an Open Book Quiz. Put a check mark next to the correct answer for each of the following four questions, either True or False. ( / 4 marks total) 1. (1 mark) Reaction rate = the rate of appearance of a product or the rate of disappearance of a reactant True False 2. (1 mark) The following are four of the factors which affect reaction rate: Catalysts, Concentration, Nature of reactants and Temperature True False 3. (1 mark) Homogeneous Reaction = All the reactants are in different phases/states True False 4. (1 mark) Surface area is only important in heterogeneous reactions True False Total = / 4 marks
Unit 1 Lesson 1 Quiz Part 2 ( / 10 marks total) Please select the best answers for the following 10 multiple choice questions and write them in the space below. 1) 2) 3) 4) 5) 6) 7) 8) 9) _ 10) 1) Consider the following reaction: Zn (s) + 2 HCl (aq) ---> H 2 (g) + ZnCl 2 (aq) Data collected for the above reaction are summarized in the table below: The rate of this reaction can be measured in units of A. g/min B. g/ml C. min/ml D. g/(ml)( o C)
2) Consider the following reactions in open systems: I. 2 H 2 (g) + O 2 (g) ---> 2 H 2 O (g) II. CaCO 3 (s) ---> CaO (s) + CO 2 (g) III. CaO (s) + SiO 2 (s) ---> CaSiO 3 (s) IV. AgNO 3 (aq) + NaCl (aq) ---> NaNO 3 (aq) + AgCl (s) In which of the above reactions could reaction rate be determined by: Change in mass of the system Change in time A. I B. II C. III D. IV 3) Which of the following could not be units for reaction rate? A. sec -1 B. g/ml C. M/min D. o C/hour 4) Which of the following would not be units for reaction rate? A. g/s B. M/min C. kj/mol D. kpa/min 5) Which of the following could be used as the units for rate of a reaction? I. ml/s II. g/min III. M/min A. I only. B. I and II only. C. II and III only. D. I, II and III
6) Consider the graph for the following reaction CaCO 3 (s) + 2HCl(aq) --> CaCl 2 (aq) + CO 2 (g) + H 2 O(l) The average rate of reaction is greatest (that is the graph s slope is steepest) in the time interval A. 0-1 minute B. 0-2 minutes C. 0-3 minutes D. 0-4 minutes 7) Consider the following reaction: N 2 (g) + 3H 2 (g) --> NH 3 (g) If the rate of formation of NH 3 is 4.0 x 10-4 mol/s, then the rate of consumption of H 2 is A. 2.0 x 10-4 mol/s B. 4.0 x 10-4 mol/s C. 6.0 x 10-4 mol/s D. 1.2 x 10-3 mol/s
8) Which of the following could be used to describe the rate of a reaction? A. change in time change in concentration B. change in mass change in concentration C. change in concentration change in time D. change in concentration change in mass 9) Consider the following reaction: Fe 2 O 3 (s) + 2Al(s) --> Al 2 O 3 (s) + 2Fe(l) If 0.50 mol of Fe is produced in 10.0 sec, what is the rate of consumption of Fe 2 O 3 in mol/s. A. 5.0 x 10-2 mol/s B. 2.5 x 10-2 mol/s C. 1.0 x 10-1 mol/s D. 5.0 mol/s 10) In most chemical reactions, reaction rate may be calculated. Which term must always be written in the denominator of the reaction rate? A. mass e.g. in grams B. volume e.g. in ml C. molarity e.g. in Moles/Litre D. time e.g. in seconds
Please read Pages 7-8 in the reading booklet and then come back here to complete Unit 1 Lesson 2 quiz question Unit 1 Lesson 2 - Collision Theory 3.0 Collision Theory For a reaction to occur, reactant particles must collide, creating an opportunity for old bonds to break and new bonds to form. Any one collision may be successful or unsuccessful depending on two factors. Read more on the reading booklet Unit 1 Lesson 2 Quiz - Instructions - This is an Open Book Quiz. Put a check mark next to the correct answer for the following. 1. (2 marks) What are the two main factors which affect a successful collision? I. energy of collision II. favorable geometry III. number of particles reacting IV. surface area a. I and II b. III only c. I, II, III and IV d. III and IV
Now you are at the final Part B. Please read Pages 9-24 in the reading booklet and complete the 22 handwritten questions as per instruction to be attached to this Assignment for the complete submission of the substantive assignment for Chemistry 12. You will hand in this completed booklet to our office (Email it or personally drop it off) ------------------------------------------------------------------------------------------------------------ First Assignment Marks Part A Unit 1 Lesson 1 Quiz Part 1 / 4 marks Part 2 / 10 marks Unit 1 Lesson 2 Quiz / 2 marks Part A marks Total = / 16 marks (Lesson 1 quiz + Lesson 2 quiz) Part B Practice Work Questions - Hand written Answers - Exercises #1-22 Completion mark /22 (divided by 2) = /11 Part B mark First Assignment total Mark = / 27 marks (Part A mark + Part B mark)