Chapter 2

Question 1

process when one or more substances react and form a new substance

Answer 1

chemical reaction

Question 2

sold that us produced as a result of a chemical reaction in a solution

Answer 2

precipitate

Question 3

combination of chemical symbols and numbers to represent a substance

Answer 3

chemical formula

Question 4

representation of a chemical reaction that uses symbols to show the relationship between the reactants and the product

Answer 4

chemical equation

Question 5

substance or molecule that participates in a chemical reaction

Answer 5

reactant

Question 6

the substance that forms in a chemical reaction

Answer 6

product

Question 7

law that states that mass cannot be created or destroyed in ordinary chemical and physical changes

Answer 7

law of conservation of mass

Question 8

reaction in which two or more substances combine to from a new compound

Answer 8

synthesis reaction

Question 9

reaction in which a single compound breaks down to form two or more new substances

Answer 9

decomposition reaction

Question 10

reaction in which one element or radical takes the place of another element or radical compound

Answer 10

single displacement reaction

Question 11

reaction in which gas, a solid precipitate, or a molecular compound forms from the exchange of ions between two compounds

Answer 11

double displacement reaction

Question 12

chemical reaction when energy is released

Answer 12

exothermic reaction

Question 13

a chemical reaction that requires heat

Answer 13

endothermic reaciton

Question 14

law that states that energy cannot be created nor destroyed but can be changed from one form to another.

Answer 14

law of conservation of energy

Question 15

minimum amount of energy required to start a chemical reaction

Answer 15

Activation Energy

Question 16

substance that slows down or stops a chemical reaction

Answer 16

inhibitor

Question 17

substance that speeds up a chemical reaction

Answer 17

catalyst