Unit 9 chemistry: chemical reactions

Question 1

Which side of the equation are reactants on?

Answer 1

Left

Question 2

Which side of the equation are products on?

Answer 2

Right

Question 3

What is the arrow in the chemical equation called?

Answer 3

Yield

Question 4

Diatomic elements:

Answer 4

Have the subscript “2”

Question 5

Monatomic elements:

Answer 5

Just right the symbol

Question 6

Ionic compound:

Answer 6

Balance charges

Question 7

Molecular compound:

Answer 7

Prefixes for subscripts

Question 8

What is a chemical reaction?

Answer 8

Describes a chemical change

Question 9

Reactant:

Answer 9

The chemical(s) you start with before the reaction.

Question 10

Products:

Answer 10

The new chemical(s) formed by the reaction.

Question 11

Subscript:

Answer 11

Shows how many atoms of an element are in a molecule.

Question 12

Coefficient:

Answer 12

Shows how many molecules there are in a particular chemical.

Question 13

Law of Conservation of Mass:

Answer 13

In a chemical reaction, matter is neither created nor destroyed.

Question 14

Synthesis:

Answer 14

Two elements combine to form a compound.

Question 15

Decomposition:

Answer 15

A compound that breaks down into elements and/or smaller compounds.

Question 16

Metal chlorate

Answer 16

Metal chlorate —– metal chloride + oxygen

Question 17

Metal carbonate

Answer 17

Metal carbonate —– metal oxide + carbon dioxide

Question 18

Metal hydroxide

Answer 18

Metal hydroxide —– metal oxide + water

Question 19

Metal oxide

Answer 19

Metal oxide —– metal + oxygen

Question 20

Single replacement:

Answer 20

An element and compound react to form a different element and compound.

Question 21

Double replacement:

Answer 21

Two compounds react to from two new compounds.

Question 22

Neutralization reaction:

Answer 22

A reaction between an acid and a base.

Question 23

Combustion:

Answer 23

A reaction with oxygen.