PS Chapter 21

Question 1

Chemical Reaction

Answer 1

Process in which one or more substances are changed into new substances

Question 2

Reactant

Answer 2

In a chemical reaction, the substance that reacts

Question 3

Product

Answer 3

In a chemical reaction, the new substance that is formed

Question 4

Chemical Equation

Answer 4

Short hand method to describe chemical reactions using chemical formulas and other symbols

Question 5

Coefficient

Answer 5

Number in a chemical equation that represents the number of units of each substance taking part in a chemical reaction

Question 6

Balance Chemical Reaction

Answer 6

Chemical equation with the same number of atoms of each element on both side of the equation

Question 7

Combustion Reactions

Answer 7

A type of chemical reaction that occurs when a substance reacts with oxygen to produce energy in the form of heat and light.

Question 8

Synthesis Reaction

Answer 8

Chemical reaction in which two or more substances combine to form a different substance

Question 9

Decomposition Reaction

Answer 9

Chemical reaction in which one substance breaks down into two ore more substances

Question 10

Single - Displacement Reaction

Answer 10

Chemical reaction in which one element replaces another element in a compound

Question 11

Double - Displacement Reaction

Answer 11

Chemical reaction that produces a precipitate, water, or a gas when two ionic compounds in a solution are combined

Question 12

Precipitate

Answer 12

Inso