Useful Products from Oil Crude

- Oil is a mixture of hydrocarbons.

- They can be separated and processed by cracking and polymerisation to make a variety of useful materials

Useful Products from Metal Ores

- How we obtain metals depend on how reactive the are

Useful Products from Rocks

- Limestone can be used as building material or as a raw material in cement, concrete and glass.

Useful Products from Air

- Nitrogen from the atmosphere can be turned into synthetic fertiliser.

- Overuse cause eutrophication

Representing Reactions

- Practice balancing equations

Changes to the Earth and Atmosphere

- The first atmosphere was mainly carbon dioxide.

- Plant produced all the oxygen in the atmosphere.

- This oxygen formed ozone which protects us from uv light.

The Rock Record

- Rocks contain evidence of how they were formed.

- Different types of rock are linked in the rock cycle.