Chapter 2

Question 1

chemical reaction

Answer 1

process by which one or more substances change or produce one or more different substances.

Question 2

precipitate

Answer 2

solid that is produced as a result of a chemical reaction in a solution

Question 3

chemical formula

Answer 3

combination of chemical symbols and numbers to represent a substance

Question 4

chemical equation

Answer 4

representation of a chemical reaction that uses symbols to show to the relationships between reactants and products

Question 5

reactant

Answer 5

substance or molecule that participates in a chemical reaction

Question 6

product

Answer 6

substances formed in a chemical reaction

Question 7

synthesis reaction

Answer 7

two or more substances combine to form a new substance

Question 8

decomposition reaction

Answer 8

single compound breaks down into the substances that make it up.

Question 9

single-displacement

Answer 9

one substance replaces another in a compond

Question 10

double-diplacement

Answer 10

substances between two compounds switch places

Question 11

exothermic reation

Answer 11

chemical reaction where energy is released

Question 12

endothermic reaction

Answer 12

chemical reaction where energy is absorbed

Question 13

law of conservation of energy

Answer 13

law that states energy is not destroyed or created, but changed

Question 14

activation energy

Answer 14

smallest amount of energy required to start a chemical reaction

Question 15

inhibitor

Answer 15

substance that slows down or stops chemical reactions

Question 16

catalyst

Answer 16

substance that lowers the activation energy to increase the rate of reaction for chemical reactions