Environmental Chem Recap

Which gas makes up 21% of Earth's current atmosphere?

• Nitrogen

• Oxygen

• Helium

• Carbon Dioxide

Complete combustion is when a fuel is burnt in. . .

• A poor supply of oxygen

• A good supply of oxygen

Which gas makes up 78% of Earth's current atmosphere?

• Nitrogen

• Oxygen

• Helium

• Carbon Dioxide

Inomplete combustion is when a fuel is burnt in. . .

• A poor supply of oxygen

• A good supply of oxygen

This fossil fuel is made from just plants that existed in swampy areas

• Oil

• Gas

• Coal

Which of these is a greenhouse gas?

• Oxygen

• Carbon Dioxide

• Helium

The Earths oceans can dissolve carbon dioxide

• True

• False

Soot is produced during incomplete combustion

• True

• False

The roaring blue flame on a Bunsen burner is due to complete combustion of the fuel

• True

• False

Name a use of fossil fuels