III. Modified True or False Directions: Write CHEMISTRY if the statement is correct, if otherwise, change the underlined words to make the statement correct. 1.The area of chemistry concerned with the speed or rate at which chemical reactions occur is called chemical kinematics. 2. The substances that go away over a period of time in a chemical reaction are called products. 3. In concentration products, the more collision of molecules, the rate of reaction is greater. 4. During a chemical reaction, the amount of reactants increases with time while simultaneously the amount of products decreases. 5. The over-all order of reaction is determined as the product of the powers of the concentration factors in the rate equation. 6 The entronu oft

Chemistry
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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uonpeaJ aui dn paads ou
C. To prevent a compound from forming
D. To produce lesser amount of products
III. Modified True or False
Directions: Write CHEMISTRY if the statement is correct, if otherwise, change the underlined words to make the
statement correct.
1.The area of chemistry concerned with the speed or rate at which chemical reactions occur is called
chemical kinematics.
2. The substances that go away over a period of time in a chemical reaction are called products.
3. In concentration products, the more collision of molecules, the rate of reaction is greater.
4. During a chemical reaction, the amount of reactants increases with time while simultaneously the amount
of products decreases.
5. The over-all order of reaction is determined as the product of the powers of the concentration factors in
the rate equation.
6. The entropy of the universe is always positive as it continues to expand.
7. Entropy is the ability of randomness.
8. A spontaneous process occurs naturally without the action of internal forces.
9. Positive entropy change means a decrease in randomness.
10. The second law of Thermodynamics states that for any spontaneous process, there is a net increase in the
total entropy of the system and its surroundings.\
11. The second law of thermodynamics explains the relationship between entalpy change and spontaneity of
a process.
12. Free energy is a portion of the total energy of a system that is not available to do useful work.
13. Gibbs free energy also determines the non-spontaneity of a reaction
14. According to Gibbs free energy, AH must be positive, while AS is negative.
15.. A reversible chemical reaction reaches a state of equilibrium.
III. Short response Test
Directions: Answer the following questions briefly and concisely.
1. Why is understanding of the concept of pH important?
2. Why is studying the nature of chemical reactions significant to the society?
Transcribed Image Text:uonpeaJ aui dn paads ou C. To prevent a compound from forming D. To produce lesser amount of products III. Modified True or False Directions: Write CHEMISTRY if the statement is correct, if otherwise, change the underlined words to make the statement correct. 1.The area of chemistry concerned with the speed or rate at which chemical reactions occur is called chemical kinematics. 2. The substances that go away over a period of time in a chemical reaction are called products. 3. In concentration products, the more collision of molecules, the rate of reaction is greater. 4. During a chemical reaction, the amount of reactants increases with time while simultaneously the amount of products decreases. 5. The over-all order of reaction is determined as the product of the powers of the concentration factors in the rate equation. 6. The entropy of the universe is always positive as it continues to expand. 7. Entropy is the ability of randomness. 8. A spontaneous process occurs naturally without the action of internal forces. 9. Positive entropy change means a decrease in randomness. 10. The second law of Thermodynamics states that for any spontaneous process, there is a net increase in the total entropy of the system and its surroundings.\ 11. The second law of thermodynamics explains the relationship between entalpy change and spontaneity of a process. 12. Free energy is a portion of the total energy of a system that is not available to do useful work. 13. Gibbs free energy also determines the non-spontaneity of a reaction 14. According to Gibbs free energy, AH must be positive, while AS is negative. 15.. A reversible chemical reaction reaches a state of equilibrium. III. Short response Test Directions: Answer the following questions briefly and concisely. 1. Why is understanding of the concept of pH important? 2. Why is studying the nature of chemical reactions significant to the society?
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