Unit 4 Test

Question 1

Law of conservation of mass and matter

Answer 1

All masses can not be created or destroyed

Question 2

Balance equations

Answer 2

Use coefficents

Can’t break up a compound

Question 3

Predicting single replacement reactions

Answer 3

1. Is it going to happen (metal chart)

2. balance

Question 4

Double replacement reactions

Answer 4

Both reactants must be aq

1 product must be s or l I

Question 5

Net Ionic Equations

Answer 5

Break up all the aquous compounds

Remove the bystanders

Question 6

Types of reaction

Answer 6

Single replacement - 1 element & 1 compound
Double replacement- 2 switches
Synthesis- 2 elements > 1 compound
Decomposition- 1 compound > elements
Combustion carbon + oxygen> c02 & h20