What is cracking?

Name several problems which can occur whilst exploiting crude oil.

What property of hydrocarbons lets fractional distillation of crude oil work?

What is a fuel?

What is the general word equation for the complete combustion of a hydrocarbon?

What is there a shortage of in 'incomplete combustion'?

What is the general word equation for the incomplete combustion of a hydrocarbon?

What percentage of the Earths gas is nitrogen?

According to some scientists theories, how was the ocean created?

What process, used by plants, helped to increase the level of oxygen in the atmosphere until todays level?

What percentage of the worlds atmosphere is carbon dioxide?

Name three factors that increase carbon dioxide levels.

What is the name given to the object that is fitted to a vehicle exhaust system to convert CO into CO2?

How is NOx made?

What is the chemical formula for methane?

What is the difference between alkenes and alkanes?

Which family of hydrocarbons
decolourises bromine water, alkanes or alkenes?

How are polymers made?

What is the reaction called when monomers join up to make polymers?

What conditions are needed for polymerisation to happen?

What happens during addition polymerisation?

What does 'non-biodegradable' mean?

What is the name given to the process when protein is cooked and the molecules change shape?