Air composition
Air pollution
Greenhouse gases
Global warming
Water
100

Percentage of nitrogen in the atmosphere

What is 78%?

100

Three air pollutants

What is sulfur dioxide, nitrogen oxides, methane, carbon monoxide and carbon dioxide?

100

The two, main greenhouse gases

What is carbon dioxide and methane?

100

The changes in weather patterns brought by global warming

What is climate change?

100

The difference between tap and distilled water

What is tap water is a mixture of natural minerals and substances added due to human activity while distilled water is pure water?

200

Second most abundant gas in the atmopshere

What is oxygen?
200

The gas that occurs naturally in the air but, when present in larger quantities, is classed as a pollutant

What is carbon dioxide?

200

True or false?

Carbon dioxide is produced during the incomplete combustion of fossil fuels.

What is false?

200

The gases that play an important role in maintaining a constant temperature on Earth

What is carbon dioxide and methane?

200
The paper that turns pink when in the presence of water

What is blue chloride paper?

300

The substances that make up the atmosphere

What is air and water vapor?

300

The gas that has been linked to the formation of photochemical smog

What is oxides of nitrogen?

300

What is a greenhouse gas?

What is a gas that absorbs heat reflected from the surface of the Earth, stopping it escaping the atmosphere?

300

The natural phenomenon in which thermal energy from the Sun is 'trapped' at the Earth's surface by certain gases in the atmosphere (greenhouse gases)

What is the greenhouse effect?
300

Two substances in natural water that are harmful

What is some metallic compounds, sewage, nitrates and phosphates and plastics?

400

Thickness of the atmosphere

What is 480 km?

400

The device used for converting polluting exhaust gases from cars into less dangerous emissions

What is catalytic converter?

400
Why is methane increasing levels in the atmosphere recently?

Increased cattle farming and more waste being generated by larger populations. As well as the decomposition of food waste under anaerobic conditions by bacteria at landfill sites.

400

True or false?

Some energy from the Sun is absorbed in the atmosphere while some is radiated back into space as light and heat

What is true?

400

One substance in natural water that is beneficial

What is dissolved oxygen and metallic compounds?

500

The most abundant gas in the 1% of the other gases in the atmosphere

What is argon?

500

When does incomplete combustion occur?

What is when a hydrocarbon fuel is burned in a limited supply of oxygen?

500

The chemical formula of methane producing carbon dioxide when burnt in a plentiful supply of oxygen.

What is CH₄ + 2O₂ → CO₂ + 2H₂O?

500

The balanced symbol equation for photosynthesis

What is 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂?

500

Give one chemical test that shows the presence of water (chemical formula)

What is CoCl₂ + 6H₂0 → CoCl₂ X 6H₂0 or CuSO₄ + 5H₂0 → CuSO₄ X 5H₂0