Module 2

Question 1

What is a fuel?

Answer 1

A substance which is burned to release enrgy

Question 2

What is another word for combustion?

Answer 2

Bruning

Question 3

What does a substance react with when it burns?

Answer 3

Oxygen

Question 4

What is the test for oxygen?

Answer 4

Relights a glowing splint

Question 5

How is carbon dioxide made?

Answer 5

Carbon reacts with oxygen

Question 6

What is the test for carbon dioxide?

Answer 6

Turns lime water cloudy

Question 7

When is carbon monoxide produced?

Answer 7

When carbon burns in an insufficient supply of oxygen

Question 8

What is carbon monoxide?

Answer 8

A toxic gas

Question 9

How is water produced?

Answer 9

Hydrogen reacts with water

Question 10

What is the test for hydrogen?

Answer 10

Burns with a squeaky pop

Question 11

What is hydrogen being hailed as?

Answer 11

A fuel of the future

Question 12

What is coal, oil, and natural gas?

Answer 12

Fossil fuels

Question 13

How were coal, oil, and gas formed?

Answer 13

They were formed from the remains of plant and animal organisms that lived millions of years ago

Question 14

What do oil and gas burn to produce?

Answer 14

Carbon Dioxide and Water

Question 15

What do crude oil and natural gas mainly consist of?

Answer 15

Compounds called hydrocarbons

Question 16

What do Hydrocarbons contain?

Answer 16

Hydrogen and carbon only

Question 17

What is crude oil?

Answer 17

A I mixture of hydrocarbons

Question 18

What is fractional distillation?

Answer 18

A process used to separate substances with different boiling points

Question 19

What is fractional distillation used for?

Answer 19

To separate crude oil into fractions

Question 20

What is a fraction?

Answer 20

A group of hydrocarbons all with boiling points within a specific range

Question 21

What do fractions differ in?

Answer 21

Boiling points, viscosity, and flammability

Question 22

What can the property of fractions be related to?

Answer 22

The size of molecules in the fraction

Question 23

What are 2 pollution problems associated with burning fossil fuels?

Answer 23

Acid rain, and global warming

Question 24

What does carbon dioxide contribute to?

Answer 24

Global warming

Question 25

When is acid rain caused?

Answer 25

When gasses such as sulphur dioxide and nitrogen dioxide dissolve in water in the atmosphere

Question 26

What does acid rain do?

Answer 26

Kills fish in rivers, erodes buildings, and destroys plant life

Question 27

When is sulphur dioxide produced?

Answer 27

When some fossil fuels are burned

Question 28

How is nitrogen dioxide made?

Answer 28

The sparking of air in a petrol car engine

Question 29

How can pollution from burning fossil fuels be reduced?

Answer 29

Lean-burn engines, catalytic converters, low-sulphur petrols

Question 30

What is photosynthesis?

Answer 30

The process which plants make carbohydrates, from carbon dioxide and water, using light energy in the presence of chlorophyll

Question 31

Why are Carbohydrates an important food for animals?

Answer 31

Because they provide energy

Question 32

What do carbohydrates do?

Answer 32

They release energy, producing carbon dioxide and water when burned.

Question 33

What elements are present in carbohydrates?

Answer 33

Carbon, Hydrogen, and Oxygen

Question 34

What is the word equation for photosynthesis?

Answer 34

Carbon Dioxide + Water = Glucose + Oxygen

Question 35

What is the word equation for respiration?

Answer 35

Glucose + Oxygen = Carbon Dioxide + Water

Question 36

How are alcoholic drinks made?

Answer 36

From any fruit or veg which contains starch or sugars

Question 37

What is an enzyme?

Answer 37

A biological catalyst

Question 38

What is the catalyst for the alcohol reaction?

Answer 38

An enzyme in yeast

Question 39

What can make an alcoholic drink vary?

Answer 39

The plant source of carbohydrate

Question 40

What is the word equation for the production of alcohol from carbohydrates?

Answer 40

yeast Glucose————>Ethanol+Carbon Dioxide

Question 41

What is Distillation used to increase?

Answer 41

The alcohol concentration of the products from fermentation