Rates, Types, And Balancing Reactions

Question 0

Physical change

Answer 0

A characteristic of matter that you can observe or measure without the identity of that matter. (Changing the states of matter.)

Question 1

Chemical change

Answer 1

A change in matter in which the substances that make up the matter change into other substances with different chemical and physical properties.(foaming, fizzing, temperature change, color changes, fire.)

Question 2

Endothermic

Answer 2

Chemical reactions that absorb thermal energy.

Question 3

Exothermic

Answer 3

Chemical reactions that release thermal energy.

Question 4

Catalyst

Answer 4

Substance that increases the reaction rate.

Question 5

Inhibitor

Answer 5

Substance that decreases the reaction rate.

Question 6

Increases reaction rate

Answer 6

Surface area, concentration/pressure, temperature.

Question 7

Synthesis

Answer 7

Two or more substances combine to form a new compound.

Ca + O2 → CaO

Question 8

Decomposition

Answer 8

One compound breaks down and forms two or more substances.

AlCl3 → Al + Cl

Question 9

Combustion

Answer 9

A chemical reaction in which a substance combines with oxygen and releases energy.
CH4 + O2 → CO2 + H2O

Question 10

Single replacement

Answer 10

One element replaces another element in a compound.

Mg + HCl → MgCl2 + H2

Question 11

Double replacement

Answer 11

Two or more substances switch, forming a new compound.

BaBr2 + NaSO4 → BaSO4 + NaBr

Question 12

Ca + O2 → CaO

Answer 12

2Ca + O2 → 2CaO2

Question 13

AlCl3 → Al + Cl2

Answer 13

2AlCl3 → 2Al + 3Cl2