Hazard

Key Stage 3

A hazard is something that could be dangerous.

Something which is hazardous may be unsafe if used incorrectly.

When dealing with hazards the danger can be reduced by taking precautions.

Toxic	Flammable	Harmful	Irritant

A toxic substance is one that is so poisonous it could kill a human.	A flammable substance is one that can catch on fire easily.	A harmful chemical is one that can cause damage to an organism.	An irritant is a substance that can cause itching and pain to the skin, eyes or lungs
Corrosive	Long Term Health Risk	Dangerous to the Environment	Explosive

A corrosive substance is one which can break down other materials or damage the skin.	Chemicals that are a long term health risk cause non-communicable diseases if they are used repeatedly over long periods of time.	A chemical that is dangerous to the environment can kill organisms other than humans.	An explosive substance is one which can react very quickly, without needing oxygen from the air, that produces a lot of gas during the reaction.
Oxidising Agent	Compressed Gas	Biohazard	Ionising Radiation

An oxidising agent is a chemical that causes the oxidation of other chemicals.	Compressed Gas is when a gas is held under high pressure in a container.	A biohazard is something which contains pathogens which could cause disease.	Ionising Radiation is radiation which can cause atoms to lose electrons and become ions.
Danger of Electrocution	LASER Radiation

A danger of electrocution is when there is electricity at such a large potential difference that it could pass through a living organism.	LASER Radiation is an extremely intense beam of light.