Rates, Types, Balancing Reactions

Question 0

Physical Change

Answer 0

A characteristics of matter that you can observe or measure without changing the identity of the matter (changing the states of matter)

Question 1

Chemical Changes

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 change, fire)

Question 2

Endothermic

Answer 2

Chemical reactions that absorbs thermal energy

Question 3

Exothermic

Answer 3

Chemical reactions that release thermal energy

Question 4

Catalyst

Answer 4

Substances that increase the reaction rate

Question 5

Inhibitor

Answer 5

Substances that decrease the reaction rate

Question 6

Increase 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 —–> CO + H2O

Question 10

Single Replacement

Answer 10

Mg + HCl —-> MgCl3 + H2

Question 11

Double Replacement

Answer 11

Two or more substances switch, forming new compound BaBr2 + Na2SO4 + NaBr

Question 12

Ca + O2 —–> CaO

Answer 12

2Ca + O2 —> 2CaO2

Question 13

AlCl3 —–> Al + Cl2

Answer 13

2AlCl3 —-> 2Al + 3Cl2