Chapter 4-5 Test

Question 1

Double displacement reaction

Answer 1

AB + CD = AD + CD

Can produce a precipitate, neutralized solution, or a gas

Question 2

Evidence of a chemical reaction

Answer 2

Unexpected change in colour
Energy released or absorbed
Gas is produced
Precipitate formed

Question 3

Catalyst

Answer 3

Substance that makes a chemical reaction occur faster without itself being consumed in the reaction
EX: manganese(IV) oxide

Question 4

Synthesis reaction

Answer 4

A + B = AB

Question 5

Decomposition reaction

Answer 5

AB = A + B

Question 6

Activity series

Answer 6

Element can displace elements below it but not above it

Further apart 2 elements are, reaction will occur quicker

Question 7

Single Displacement reaction

Answer 7

A + BC = AC + B

Question 8

Neutralization reaction

Answer 8

Reaction of an acid and a base where the resulting solution has a pH closer to 7 than either of the reactants
Produces water and an ionic compound

Question 9

Oxide

Answer 9

Compound composed of oxygen and one other element

Question 10

Acid

Answer 10

Compound that produces hydrogen ions when mixed with water

Conducts electricity, tastes sour, neutralizes bases

Question 11

Base

Answer 11

Produces hydroxide ions when mixed with water

Conducts electricity, tastes sour, neutralizes acids

Question 12

Acidic oxide

Answer 12

Oxide that forms an acidic solution when dissolved in water

Non-metallic oxide

Question 13

Basic oxide

Answer 13

Oxide that forms a basic solution when dissolved in water

Metallic oxide

Question 14

Remediation

Answer 14

Process of treating contaminated land or water so that it is safe for use again
Can be physical, chemical, biological

Question 15

Physical remediation

Answer 15

Soil flushing

Question 16

Chemical remediation

Answer 16

Stabilization & solidification
Electrolysis
Chemical oxidation

Question 17

Bioremediation

Answer 17

Using organisms to treat contaminated land or water
Much more cost effective
Less disruptive
Takes longer

Question 18

Phytoremediation

Answer 18

Using plants to treat contaminated land or water

Question 19

Principles of green chemistry

Answer 19

1: use renewable resources as starting materials
2: use chemicals that have less environmental impact
3: use catalysts to increase reaction efficiency
4: use less energy
5: waste not

Question 20

Use renewable resources as starting materials

Answer 20

Plastic industry

Benzene - glucose

Question 21

Use chemicals that have less environmental impact

Answer 21

Polystyrene industry

Uses carbon dioxide as the expanding agent, not CFC’s

Question 22

Use catalysts to increase reaction efficiency

Answer 22

Process of making sulfuric acid

Vanadium pentoxide - catalyst

Question 23

Use less energy

Answer 23

Manufacturing steel

Update aging equipment

Question 24

Waste not

Answer 24

Recycle & reuse

Question 25

Green chemistry

Answer 25

Why generate pollution if there is a greener alternative?