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substance. 3. А (An) 4. According to the law of be neither created nor destroyed during means “yields". matter can a chemical reaction. 5 Two or simple suhstances combine to form a new more

substance. 3. А (An) 4. According to the law of be neither created nor destroyed during means “yields". matter can a chemical reaction. 5 Two or simple suhstances combine to form a new more

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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2:55 E Chapter 8-Chemical Reactions E... of volume. 10. Adding a catalyst to a reaction increases rate by a. increasing molecular motion. b. decreasing molecular motion. c. lowering activation energy. d. increasing concentration. d. temperature. DIRECTIONS: Write the word or words that best completes each statement. 1. In a change, one kind of matter is turned into another. 2. A chemical reaction is accompanied by a change in the and of the substance. 3. А (An) 4. According to the law of be neither created nor destroyed during means “yields". matter can a chemical reaction. 5. Two or more simple substances combine to form a new, more complex substance in a (an) reaction. 6. An uncombined element replaces an element that is part of a compound in a (an) reaction. 7. A reaction in which energy is released is called a (an) reaction. 8. In an endothermic reaction, the have more energy. 9. The study of reaction rates is called 10. A substance that increases the rate of a chemical reaction without itself being changed is called а (an) DIRECTIONS: Determine whether each statement is true or false. Write the word TRUE if the statement is true or write FALSE if the statement is FALSE. If the statement is false, change the BOLD word or words to make the statement true. 1. The substances formed as a result of a chemical reaction are called REACTANTS. 2. A CHEMICAL EQUATION uses symbols and formulas to represent a reaction. 3. A number written in front of a chemical symbol or formula is a (an) COEFFICIENT. 4. To balance the following equation, the number 2 should be placed in front of 02- K CIO? YCI
Transcribed Image Text:2:55 E Chapter 8-Chemical Reactions E... of volume. 10. Adding a catalyst to a reaction increases rate by a. increasing molecular motion. b. decreasing molecular motion. c. lowering activation energy. d. increasing concentration. d. temperature. DIRECTIONS: Write the word or words that best completes each statement. 1. In a change, one kind of matter is turned into another. 2. A chemical reaction is accompanied by a change in the and of the substance. 3. А (An) 4. According to the law of be neither created nor destroyed during means “yields". matter can a chemical reaction. 5. Two or more simple substances combine to form a new, more complex substance in a (an) reaction. 6. An uncombined element replaces an element that is part of a compound in a (an) reaction. 7. A reaction in which energy is released is called a (an) reaction. 8. In an endothermic reaction, the have more energy. 9. The study of reaction rates is called 10. A substance that increases the rate of a chemical reaction without itself being changed is called а (an) DIRECTIONS: Determine whether each statement is true or false. Write the word TRUE if the statement is true or write FALSE if the statement is FALSE. If the statement is false, change the BOLD word or words to make the statement true. 1. The substances formed as a result of a chemical reaction are called REACTANTS. 2. A CHEMICAL EQUATION uses symbols and formulas to represent a reaction. 3. A number written in front of a chemical symbol or formula is a (an) COEFFICIENT. 4. To balance the following equation, the number 2 should be placed in front of 02- K CIO? YCI
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