End Of Year Test

Question 1

What is a fuel?

Answer 1

A substance that is burned to release energy

Question 2

What is combustion?

Answer 2

Another word for burning

Question 3

What happens when a substance burns?

Answer 3

It reacts with oxygen

Question 4

What is the test for oxygen?

Answer 4

It relights a glowing splint

Question 5

How is carbon dioxide produced?

Answer 5

Carbon reacts with oxygen.

Question 6

What is the test for carbon dioxide?

Answer 6

The test for carbon dioxide is that it turns lime water cloudy

Question 7

How is carbon monoxide produced?

Answer 7

Carbon monoxide is produced when carbon burns in an insufficient supply of oxygen.

Question 8

What is carbon monoxide?

Answer 8

Carbon monoxide is a toxic gas.

Question 9

How is water produced?

Answer 9

Hydrogen reacts with oxygen to produce water.

Question 10

What is the test for hydrogen?

Answer 10

The test for hydrogen is that it burns with a squeaky pop

Question 11

What is hydrogen being hailed as?

Answer 11

Hydrogen is being hailed as a fuel of the future

Question 12

What are the fossil fuels?

Answer 12

Coal, oil and gas are all fossil fuels.

Question 13

How were fossil fuels formed?

Answer 13

Coal, oil and gas were formed from the remains of plant and animal organisms that lived millions of years ago.

Question 14

What produces carbon dioxide and water

Answer 14

Oil and gas burn to produce carbon dioxide and water

Question 15

What do crude oil and natural gas mainly consist of?

Answer 15

Crude oil and natural gas consist mainly of compounds called hydrocarbons.

Question 16

What do hydrocarbons contain?

Answer 16

Hydrocarbons only contain the elements hydrogen and carbon.

Question 17

What is crude oil?

Answer 17

Crude oil is a mixture of hydrocarbons

Question 18

What is fractional distillation?

Answer 18

Fractional distillation is a process used to separate substances with different boiling points.

Question 19

What does fraction disilltation do to crude oil?

Answer 19

Fractional distillation is used to separate crude oil into fractions

Question 20

What is a fraction in chemistry?

Answer 20

A fraction is a group of hydrocarbons all with boiling points in a specific range.

Question 21

What do fractions have?

Answer 21

Fractions have names and different uses

Question 22

Other than boiling points what do fractions differ in?

Answer 22

Fractions also differ in viscosity and flammability

Question 23

What is acid rain caused by?

Answer 23

Acid rain is caused when gases such as sulphur dioxide and nitrogen dioxide dissolve in water in the atmosphere

Question 24

What does acid rain do?

Answer 24

Acid rain kills fish in rivers, erodes buildings and destroys plant life.

Question 25

How is sulphur dioxide produced

Answer 25

Sulphur dioxide is produced when fossil fuels are burned

Question 26

How is nitrogen dioxide produced

Answer 26

Nitrogen dioxide is produced by sparking of air in a petrol car engine.

Question 27

What are some ways that pollution from fossil fuels can np be reduced?

Answer 27

Lean-burn engines, catalytic converters, low sulphur petrol.

Question 28

What is photosynthesis

Answer 28

Photosynthesis is the process by which plants make carbohydrates from carbon dioxide and water, using ,gout energy in the presence of chlorophyll

Question 29

Why are carbohydrates an important food for animals?

Answer 29

They provide energy

Question 30

What happens when carbohydrates are burned?

Answer 30

Because carbohydrates release energy, they produce carbon dioxide and water when burned.

Question 31

What is the word equation for photosynthesis and respiration

Answer 31

Glucose + Oxygen = Carbon Dioxide

Question 32

How are alcoholic drinks made?

Answer 32

Alcoholic drinks can be made from any fruit or vegetable which is a source of starch or sugars.

Question 33

What is an enzyme in yeast?

Answer 33

An enzyme in yeast is the catalyst for the reaction of alcohol

Question 34

How does the type of alcoholic drink vary?

Answer 34

The type of alcoholic drink varies with the plant source of the carbohydrate.

Question 35

How is distillation used in alcohol?

Answer 35

Distillation is used to increase the alcohol concentration of the products from fermentation