Module 2

Question 1

What is a fuel?

Answer 1

A fuel is a substance which burns to produce energy

Question 2

What is another word for burning

Answer 2

Combustion

Question 3

When a substance burns what does it react with?

Answer 3

Oxygen

Question 4

What is the test for oxygen?

Answer 4

It relights a glowing splint

Question 5

When carbon and oxygen react, what do they produce?

Answer 5

Carbon Dioxide

Question 6

What is the test for carbon dioxide?

Answer 6

It turns limewater milky

Question 7

When is carbon monoxide produced?

Answer 7

Carbon monoxide is produced when carbon burns in an insufficient supply of oxygen, otherwise know as incomplete combustion

Question 8

What is carbon monoxide?

Answer 8

A toxic gas

Question 9

When hydrogen reacts with oxygen what is its only product?

Answer 9

Water (H2O)

Question 10

What is the test for hydrogen?

Answer 10

It burns with a squeaky pop

Question 11

Why is hydrogen being hailed as the fuel of the future?

Answer 11

It’s only byproduct is water

Question 12

Coal, oil and gas are all what?

Answer 12

Fossil fuels

Question 13

How was coal formed?

Answer 13

Coal was formed millions of years ago by the remains of dead plant life, this was caused by a high temperature and very high pressure

Question 14

How was oil and gas formed?

Answer 14

Oil and gas were formed from the remains of dead sea life, over millions of years sediment built up under high temperature and high pressure

Question 15

Oil and gas burn to produce what?

Answer 15

Carbon dioxide and water

Question 16

What do crude oil and natural gas mainly consist of?

Answer 16

Hydrocarbons

Question 17

What elements do hydrocarbons contain?

Answer 17

Hydrocarbons contain only the elements hydrogen and carbon

Question 18

Crude oil is a mixture of what?

Answer 18

Hydrocarbons

Question 19

What is fractional distillation?

Answer 19

Fractional distillation is the process used to seperate substances with different boiling points

Question 20

What does fractional distillation separate crude oil into?

Answer 20

Fractions

Question 21

What is a fraction?

Answer 21

A group of hydrocarbons with boiling points within a specific range

Question 22

What do fractions have?

Answer 22

Names and specific uses

Question 23

As well as boiling points what do fractions differ with each other?

Answer 23

Viscosity and flammability

Question 24

The properties of fractions relate to what?

Answer 24

The properties of fractions are related to the size of the molecules in the fraction

Question 25

What are two pollution problems associated with burning fossil fuels?

Answer 25

Global warming and acid rain

Question 26

What does the carbon dioxide from burning fossil fuels contribute to?

Answer 26

Global warming

Question 27

What causes acid rain?

Answer 27

Acid rain is causes when gasses such as sulfur dioxide and nitrogen dioxide dissolve in water in the atmosphere

Question 28

What does acid rain affect?

Answer 28

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

Question 29

When is sulfur dioxide produced?

Answer 29

Sulfur dioxide is produced when some fossil fuels are burned

Question 30

When is nitrogen dioxide made?

Answer 30

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

Question 31

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

Answer 31

Lean burn engines, install a catalytic converter and use low sulfur petrol

Question 32

What is photosynthesis?

Answer 32

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

Question 33

Why are carbohydrates important for animals?

Answer 33

They provide energy

Question 34

What do carbohydrates release?

Answer 34

Energy, producing carbon dioxide and water when burned

Question 35

What is the word equation for photosynthesis?

Answer 35

Carbon Dioxide + Water ➡️ Glucose + Oxygen

Question 36

What is the word equation for respiration?

Answer 36

Glucose + Oxygen ➡️ Water + Carbon Dioxide

Question 37

What is the word equation for burning carbohydrates?

Answer 37

Glucose + Oxygen ➡️ Water and Carbon Dioxide

Question 38

What elements are present in carbohydrates?

Answer 38

Carbon, hydrogen and oxygen

Question 39

Alcoholic drinks can be made from any fruit or vegetable which is a source of?

Answer 39

Sugar or starch

Question 40

What is the catalyst for the production of alcoholic drinks?

Answer 40

And enzyme in yeast which is the catalyst for this reaction

Question 41

How do alcoholic drink vary?

Answer 41

They vary based in the plant source of the carbohydrate

Question 42

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

Answer 42

Yeast/ warm or no air Glucose ➡️ Ethanol + Carbon Dioxide

Question 43

What is distillation used for?

Answer 43

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