Ch. 7

Question 1

Reactants

Answer 1

Substances that undergo changes

Question 2

Products

Answer 2

New substances formed as a result of

Question 3

Chemical equation

Answer 3

Carbon + oxygen = carbon dioxide C + O2 = CO2

Question 4

Coefficients

Answer 4

Number that appears before the formula

Question 5

Mole

Answer 5

Amount of a substance that contains approximately 6.02 x 10 to the 23 power

Question 6

Molar mass

Answer 6

Mass of or mole of a substance

Question 7

Synthesis rxn

Answer 7

Reaction in which 2 or more

Question 8

Decomposition rxn

Answer 8

A compound breaks down into 2 or more simpler substances

Question 9

Single replacement rxn

Answer 9

A reaction in which ore elements takes the place of another element in a compound

Question 10

Double replacement rxn

Answer 10

Reaction which 2 different compound exchanges positive ion and forms 2 new compounds

Question 11

Combustion rxn

Answer 11

Reaction in which a substance reacts rapidly with oxygen

Question 12

Chemical energy

Answer 12

The energy stored in a chemical bond

Question 13

Exothermic rxn

Answer 13

Chemical reaction that reales energy into its surroundings

Question 14

Endothermic rxn

Answer 14

A chemo a reaction that absorbs energy from it’s surroundings

Question 15

Reaction rate

Answer 15

The rate at which reactants change into products over time

Question 16

Catalyst

Answer 16

Used to speed up reactions

Question 17

Equilibrium

Answer 17

Both forces are equal

Question 18

Reversible reactions

Answer 18

2 reactions happen at the same time