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Check out the symbols on pages 12 &13 of the Applied Science: GCSE Double Award (Hodder) text book


HAZARD - anything that could cause harm.

RISK - the likelihood of harm being done.

Hazard Symbols

There are many differents dangers when handling chemicals. Each chemical has a different hazard. Some may be poisonous, cause burns, catch fire easily or even explode.
To warn us of the hazards chemicals use hazard symbols. These symbols are used all over the world, so no matter what language its in you'll understand the hazard.


A substance that may destroy living tissue on contact.
It causes a burn.


A substance that can catch fire easily.

This type of substance gives of a large amount of heat when in contact with other substances.
A substance that may explode if it comes into contact with a flame or heat. It may also explode due to friction or shock.
A substance that may cause harm in some way
irritant Irritant A substance that may cause irritation to the skin, eyes or inside your body.
toxic Toxic A substance that is poisonous if swallowed or breathed in. It may even go through your skin!
biohazard Biohazard These are living organisms that may cause infection.
environmental hazard Environmental Hazard These substances damage or pollute the environment.
radioactive Radiation These substances are radioactive. Radiation can damage cells and cause cancer.
Ready to try a quiz? Quiz 1 or Quiz 2

Can you find the symbols for:
1. Electrical Danger.
2. Laser Radiation.
3. Caution.

Click here for a worksheet you can print out!