Question 1

When a substance is burnt in oxygen we call the reaction

Accepted Answer

Combustion

Answer

Neutralisation

Answer

Thermal decomposition

Answer

Displacement

Question 2

When a fuel is burnt in oxygen, what is always released?

Accepted Answer

Energy

Answer

Soot

Answer

Dust

Answer

Sulfur dioxide

Question 3

When methane gas (CH4) is burnt in plenty of oxygen, the products are

Accepted Answer

Carbon dioxide and Water

Answer

Carbon monoxide and water

Answer

Carbon dioxide

Answer

Water

Question 4

When will the combustion of a fuel result in the formation of Carbon monoxide?

Accepted Answer

When there is insufficient oxygen (a limited supply)

Answer

When the oxygen is dirty

Answer

When there is lots of oxygen

Answer

When there is no oxygen

Question 5

Why is carbon dioxide called a green house gas?

Accepted Answer

It absorbs the suns energy and reflects it back towards the Earth

Answer

It makes acid rain

Answer

It causes a hole in the ozone layer

Answer

It is a toxic gas

Question 6

Why shouldn't we remove all the Carbon dioxide from the atmosphere?

Accepted Answer

Carbon dioxide prevents the earth from getting too cold or too hot

Answer

We need it to react with water

Answer

We wouldn't be able to breathe

Answer

We need it make more fossil fuels

Question 7

What gas, when released in the atmosphere, causes acid rain?

Accepted Answer

Sulfur dioxide

Answer

Carbon monoxide

Answer

Water

Answer

CFCs

Question 8

What is thermal decomposition

Accepted Answer

The break down of a chemical using heat

Answer

When a substance neutralises an acid

Answer

When a metal is forced out from solution by another more reactive element.

Answer

When a substance burns in oxygen

Question 9

What gas is released when calcium carbonate is thermally decomposed?

Accepted Answer

Carbon dioxide

Answer

oxygen

Answer

Calcium oxide

Answer

carbon monoxide

Question 10

How do you test for carbon dioxide

Accepted Answer

Limewater goes cloudy

Answer

Universal indicator turns red

Answer

A glowing splint relights

Answer

A lighted splint goes "pop"

Question 11

How do you know when an acid has been completed neutralised when reacted with calcium carbonate?

Accepted Answer

The bubbles stop

Answer

The solid turns green

Answer

The solution turns green

Answer

No more solid remains

Question 12

What is the name of the salt formed when zinc carbonate reacts with hydrochloric acid?

Accepted Answer

zinc chloride

Answer

zinc chloric

Answer

carbon dioxide

Answer

zinc chlorate

Question 13

The products made when a carbonate reacts with an acid are...?

Accepted Answer

Salt, carbon dioxide and water

Answer

carbon dioxide and water

Answer

salt and carbon dioxide

Answer

salt and water

Question 14

What is the name given to a burning reaction when not enough oxygen is supplied.

Accepted Answer

Incomplete reaction

Answer

Displacement

Answer

Complete reaction

Answer

Thermal decomposition

Question 15

Why is the formation of carbon monoxide a problem?

Accepted Answer

It is a toxic gas

Answer

It makes acid rain

Answer

It damages the ozone layer

Answer

It is a greenhouse gas

Related quizzes

Related quizzes