8.5 E Chemical Reactions

Question 1

Chemical formulas and symbols written to represent a reaction.

Answer 1

Chemical Equation

Question 2

A solid substance that forms in a liquid from a chemical reactions.

Answer 2

Precipitate

Question 3

A substance that takes part in and undergoes change during a reaction.

Answer 3

Reactants

Question 4

A substance produced during a chemical reaction.

Answer 4

Products

Question 5

Noticeable: the four signs of a chemical reaction are: production of a (1) gas, (2) heat/light, (3) formation of a precipitate, or (4) color change.

Answer 5

Evidence

Question 6

A reaction that gets cold because heat energy is absorbed from the surrounding area

Answer 6

Endothermic

Question 7

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

Answer 7

Chemical Reaction

Question 8

Elements or compounds that can only be separated or combined to make substances with new properties by means of a chemical reactions.

Answer 8

Substance

Question 9

A reaction that gets hot as heat energy is released to the surrounding area.

Answer 9

Exothermic