Types of Reactions

Question 1

Chemical Change

Answer 1

a change in matter which the substance that make up the matter change into other substances with different chemical and physical properties.

Question 2

Physical Change

Answer 2

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

Question 3

Endothermic

Answer 3

Chemical reactions that absorb thermal energy.

Question 4

Exothermic

Answer 4

Chemical reactions that release thermal energy.

Question 5

Catalyst

Answer 5

Substance that increases the reaction rate.

Question 6

Inhibitor

Answer 6

Substance that decreases the reaction rate.

Question 7

Increases reaction rate

Answer 7

Surface area, concentration/pressure, temperature

Question 8

Synthesis

Answer 8

two or more substances combine to form a new compound. Ca + O2→ CaO

Question 9

Decomposition

Answer 9

One compound breaks down and forms two or more substances. AlCl3 → Al + Cl

Question 10

Combustion

Answer 10

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

Question 11

Single Replacement

Answer 11

One element replaces another element in a compound. Mg + HCl → MgCl2 + H2

Question 12

Double Replacement

Answer 12

Two or more substances switch, forming new compoundBaBr2 + Na2SO4 → BaSO4 + NaBr

Question 13

Ca + O2 → CaO

Answer 13

2Ca + O2 → 2CaO2

Question 14

AlCl3→ Al + Cl2

Answer 14

2AlCl3→ 2Al + 3Cl2