Rate, Types, Ballacing Reations

Question 0

Physical change

Answer 0

A characteristic of matter that you can observe or measure without changing the identity of the matter (changing the state of matter)

Question 1

Chemical change

Answer 1

A change in matter in which he substances that make up the matter change into other substances with different chemical and physical properties

Question 2

Endothermic

Answer 2

Chemical reaction that absorb thermal energy

Question 3

Exothermic

Answer 3

Chemical reaction that release thermal energy

Question 4

Catalyst

Answer 4

Substance that increases the reaction rate

Question 5

Inhibitor

Answer 5

Substances 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

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 + HCI–> MgCl2 + H2

Question 11

Double replacement

Answer 11

Two or more substances switch, forming 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