Chemical Reactions 2

Question 1

Chemical equations follow the law of

Answer 1

Conservation of Mass

Question 2

Mass of product =

(Law of COM)

Answer 2

Mass of reactants

Question 3

of moles on left side of equation must equal

Answer 3

moles right side of equation

Question 4

Balancing chemical equations means same number of each type of atoms on

Answer 4

Both sides

Question 5

Balancing chemical equations involves

Answer 5

Trial and error

Question 6

_ is when two or more substances combine to make a new product

Answer 6

Synthesis

Question 7

A + B ➡️ AB is an example of

Answer 7

Synthesis

Question 8

1 mol hydrogen + 1 mol bromine ➡️

Answer 8

2 mols hydrogen bromine

Question 9

_ is when one substance breaks apart into two or more different products

Answer 9

Decomposition

Question 10

Decomposition is the opposite of

Answer 10

Synthesis reaction

Question 11

AB ➡️ A + B is an example of

Answer 11

Decomposition

Question 12

2HgO ➡️ 2Hg + (decomposition)

Answer 12

O2

Question 13

_ is when one element in a compound is replaced by another element

Answer 13

Single replacement

Question 14

Atoms that form cations will replace the (single replacement)

Answer 14

Cation in a compound

Question 15

Elements that tend to form anions will replace the _ in a compound (single replacement)

Answer 15

Anion

Question 16

AB + C ➡️

(Single replacement)

Answer 16

BC

Question 17

_ is when oxygen reacts with all other elements in the original compound, forming oxides

Answer 17

Combustion

Question 18

Combustion is when oxygen reacts with all other elements in the original compound, _

Answer 18

Forming oxides

Question 19

Combustion usually occurs when a hydrocarbon reacts with oxygen to produce a

Answer 19

Carbon dioxide and water

Question 20

Combustion usually occurs when a _ reacts with oxygen to produce a carbon dioxide and a water

Answer 20

Hydrocarbon

Question 21

_ is when two compounds react in an aqueous solution

Answer 21

Double replacement

Question 22

Double replacement aka

Answer 22

Metathesis

Question 23

In aqueous solution reaction, _ of two reactants switch places (2) (double replacement)

Answer 23

Cations

Anions

Question 24

When cations and anions switch places, they form _ (double replacement)

Answer 24

Two new compounds or products

Question 25

AB + CD ➡️ (double replacement/ metathesis)

Answer 25

AD + BC