Air composition
Percentage of nitrogen in the atmosphere
What is 78%?
Three air pollutants
What is sulfur dioxide, nitrogen oxides, methane, carbon monoxide and carbon dioxide?
The two, main greenhouse gases
What is carbon dioxide and methane?
The changes in weather patterns brought by global warming
What is climate change?
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?
Second most abundant gas in the atmopshere
The gas that occurs naturally in the air but, when present in larger quantities, is classed as a pollutant
What is carbon dioxide?
True or false?
Carbon dioxide is produced during the incomplete combustion of fossil fuels.
What is false?
The gases that play an important role in maintaining a constant temperature on Earth
What is carbon dioxide and methane?
What is blue chloride paper?
The substances that make up the atmosphere
What is air and water vapor?
The gas that has been linked to the formation of photochemical smog
What is oxides of nitrogen?
What is a greenhouse gas?
What is a gas that absorbs heat reflected from the surface of the Earth, stopping it escaping the atmosphere?
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)
Two substances in natural water that are harmful
What is some metallic compounds, sewage, nitrates and phosphates and plastics?
Thickness of the atmosphere
What is 480 km?
The device used for converting polluting exhaust gases from cars into less dangerous emissions
What is catalytic converter?
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.
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?
One substance in natural water that is beneficial
What is dissolved oxygen and metallic compounds?
The most abundant gas in the 1% of the other gases in the atmosphere
What is argon?
When does incomplete combustion occur?
What is when a hydrocarbon fuel is burned in a limited supply of oxygen?
The chemical formula of methane producing carbon dioxide when burnt in a plentiful supply of oxygen.
What is CH₄ + 2O₂ → CO₂ + 2H₂O?
The balanced symbol equation for photosynthesis
What is 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂?
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