{{asɛmtiNe Ɔkyerɛwfo}} | Nhomakorabea | Nneɛma a ɛma wotumi yɛ ade

1

Combustion of a fuel produces:

A. carbon hydride

B. hydrocarbon

C. carbon dioxide

D. water

1

Carbon dioxide can be detected using:

A. a glowing splint

B. pure water

C. orangewater

D. limewater

1

Methane + oxygen →

A. hydrogen + oxygen

B. carbon dioxide + water

C. carbon dioxide + hydrogen

D. carbon + water

1

During a chemical reaction, reactants form products. Compare the mass of reactants with the mass of products formed:

A. The mass of reactants is greater than the mass of products.

B. The mass of products is greater than the mass of reactants.

C. The mass of products is the same as the mass of reactants.

D. The change in mass depends on what the reactants and products are.

1

Oxidation is always:

A. a reaction in which a substance combines with oxygen

B. a reaction in which a substance burns in oxygen

C. a reaction in which a substance burns in air

D. an explosive reaction

1

When zinc burns in oxygen, it forms:

A. water

B. zinc hydroxide

C. zinc carbonate

D. zinc oxide

1

When 4.8 g of magnesium reacts with 3.2 g of oxygen, how much magnesium oxide is formed?

A. 1.6 g

B. 4.9 g

C. 7.0 g

D. 8.0 g

1

What does this hazard symbol warn of?

A. The substance is explosive

B. The substance burns easily

C. The substance supplies oxygen to fires

D. The substance puts out fires

1

The three sides of a fire triangle are:

E. fire, water, heat

F. heat, water, fuel

G. heat, oxygen, fuel

H. fire, oxygen, fuel

1

What happens in an exothermic reaction?

A. Energy is released that increases the temperature of the surroundings

B. Energy is taken in from the surroundings, reducing the temperature

C. The reacting substances always explode

D. You need to heat a substance or substances to get a reaction to occur

1

The best way to put out a small electrical fire is:

A. spray it with water to cool it down

B. spray with foam to exclude air and cool it down

C. cover with a wet cloth to exclude air and cool it down

D. spray with a powder extinguisher to exclude air

1

Name two pollutants that may be formed when fossil fuels are burnt in a vehicle engine.

A. Carbon dioxide and sulfur

B. Sulfur dioxide and water

C. Nitrogen oxides and sulfur

D. Nitrogen oxides and sulfur dioxide

1

How do sulfur dioxide and nitrogen oxides help cause acid rain?

A. These acidic gases dissolve in water droplets in clouds.

B. These alkaline gases react with water droplets in clouds.

C. They make rain happen more easily.

D. The gases react together forming sulfonitroxidic acid in clouds.

1

Why are carbon monoxide and soot particles found in the exhaust gases of vehicles?

A. These substances are in the fuel used in the vehicle.

B. The fuel reacts completely with oxygen in the air.

C. The fuel does not react fully with oxygen in the air.

D. These substances are formed from impurities in the fuel.

1

How does a catalytic converter help to reduce pollution from burning fossil fuels?

A. It filters out soot particles from the gases formed.

B. It changes pollutant gases into less harmful gases.

C. It absorbs sulfur dioxide so that it isn’t released into the air.

D. It reacts with the pollutants to form a solid, which has to be scraped out of the converter at regular intervals.

1

What does global warming mean?

A. The warming effect of the Sun on the Earth.

B. The natural warming effect caused by greenhouse gases in the atmosphere.

C. The additional warming effect caused by increasing amounts of carbon dioxide in the air.

D. The way the climate is changing as a result of more carbon dioxide in the air.

1

Which of these factors caused the Earth’s surface temperature to vary thousands of years ago?

A. Release of carbon dioxide by burning fossil fuels

B. Variation in the energy emitted by the Sun

C. Variation in the number of vehicles on Earth

D. Variation in ice ages

1

Which description explains how carbon dioxide helps to cause the greenhouse effect?

A. It blocks energy from the Sun from reaching the Earth’s surface.

B. It absorbs energy emitted from the Earth’s surface and re-emits it out into space.

C. It absorbs energy emitted from the Earth’s surface so that it doesn’t get any warmer.

D. It absorbs energy emitted from the Earth’s surface and re-emits it back to the surface.

1

Which of these methods would not help to reduce the amount of carbon dioxide released each year?

A. Changing from fossil fuel power stations to nuclear power stations.

B. Fitting catalytic converters to all vehicles.

C. Setting government targets for carbon dioxide production and fines for industries that exceed their target.

D. Travelling by bus or train rather than by car.

5

Burning fuels 8E Quick quiz

Burning fuels 8E Quick quiz

Combustion of a fuel produces:

Carbon dioxide can be detected using:

Methane + oxygen →

During a chemical reaction, reactants form products. Compare the mass of reactants with the mass of products formed:

Oxidation is always:

When zinc burns in oxygen, it forms:

When 4.8 g of magnesium reacts with 3.2 g of oxygen, how much magnesium oxide is formed?

What does this hazard symbol warn of?

The three sides of a fire triangle are:

What happens in an exothermic reaction?

The best way to put out a small electrical fire is:

Name two pollutants that may be formed when fossil fuels are burnt in a vehicle engine.

How do sulfur dioxide and nitrogen oxides help cause acid rain?

Why are carbon monoxide and soot particles found in the exhaust gases of vehicles?

How does a catalytic converter help to reduce pollution from burning fossil fuels?

What does global warming mean?

Which of these factors caused the Earth’s surface temperature to vary thousands of years ago?

Which description explains how carbon dioxide helps to cause the greenhouse effect?

Which of these methods would not help to reduce the amount of carbon dioxide released each year?

Explain the effects of global warming on the environment. Include at least one impact on:Weather patternsSea levelsPlants and animals

Combustion of a fuel produces:

Carbon dioxide can be detected using:

Methane + oxygen →

During a chemical reaction, reactants form products. Compare the mass of reactants with the mass of products formed:

Oxidation is always:

When zinc burns in oxygen, it forms:

When 4.8 g of magnesium reacts with 3.2 g of oxygen, how much magnesium oxide is formed?

What does this hazard symbol warn of?

The three sides of a fire triangle are:

What happens in an exothermic reaction?

The best way to put out a small electrical fire is:

Name two pollutants that may be formed when fossil fuels are burnt in a vehicle engine.

How do sulfur dioxide and nitrogen oxides help cause acid rain?

Why are carbon monoxide and soot particles found in the exhaust gases of vehicles?

How does a catalytic converter help to reduce pollution from burning fossil fuels?

What does global warming mean?

Which of these factors caused the Earth’s surface temperature to vary thousands of years ago?

Which description explains how carbon dioxide helps to cause the greenhouse effect?

Which of these methods would not help to reduce the amount of carbon dioxide released each year?

Explain the effects of global warming on the environment. Include at least one impact on:Weather patternsSea levelsPlants and animals

Explain the effects of global warming on the environment. Include at least one impact on:
Weather patterns
Sea levels
Plants and animals

Explain the effects of global warming on the environment. Include at least one impact on:
Weather patterns
Sea levels
Plants and animals