The atmosphere is a layer of gas that surrounds a planet. It may contain small amounts of solid and liquid particles.

A mixture is a material that contains two or more different substances, which can be physically separated.

Respiration is a chemical process that uses oxygen from the air, and glucose to provide energy for life processes.

A precipitate is an insoluble solid formed when two solutions react together.

Gases in the atmosphere

Science

In the Atmosphere and Changing Climate unit, pupils will build on their understanding of the carbon cycle and climate change to explore the evidence for the composition and evolution of the Earth's atmosphere, and the effects and mitigation of increased levels of carbon dioxide and methane.

In the Earth's Resources unit, pupils learned about the composition of rock, the interior of the Earth, and how igneous and metamorphic rocks are made by heating.

Carbon cycle and climate change

Physical activity and equipment requiring safe use

Which gas makes up ~79% of Earth's atmosphere?

What is the percentage of oxygen in Earth's atmosphere?

Which gas in our atmosphere is used to provide an unreactive atmosphere in food packaging?

to provide an unreactive atmosphere in food packaging

Which of the following are uses of carbon dioxide?

Which gas will form a white precipitate when bubbled through limewater, making the limewater turn milky?

extinguish the splint to leave a glowing splint

Order the following statements to describe how to test for the presence of oxygen gas.

What is the correct molecular formula for carbon dioxide?

contains different substances, which can be physically separated

contains different elements chemically joined together

Match the key term with the correct definition.

Which of the following processes requires carbon dioxide?

Which key word is used to describe a layer of gas that surrounds a planet?

What is the percentage of oxygen gas in Earth's atmosphere?

Content guidance

Risk assessment required - equipment

Adult supervision required

Starter Quiz