Canadian Centre for Occupational Health and Safety
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Health and Safety: Teaching Tools

Matching Symbols with Definitions

Symbol A Symbol B Symbol C Symbol D1 Symbol D2 Symbol D3 Symbol E Symbol F
A B C D1 D2 D3 E F

Match the hazard symbol letter above with the definition below. There is only one best answer for each definition. Symbols may be used more than once.

  1. This material could kill you if it is swallowed, inhaled, or absorbed through the skin.
  2. These materials won't kill you immediately, but could cause effects such as birth defects in your children or liver damage.
  3. The fact that most aerosol cans have propellants that can burn easily means that this symbol should be on their labels.
  4. Industrial cleaners containing sodium hydroxide, a very corrosive material, should have this symbol on their label.
  5. These materials can cause asthma or allergic skin reactions.
  6. Heating or dropping could cause these cylinders of pressurized gases to explode.
  7. Materials bearing this symbol could undergo a dangerous reaction if they come in contact with water.
  8. Blood samples contaminated by Hepatitis B viruses should be tagged with this symbol.
  9. Since it poses a fire hazard, a bottle of methanol should have this symbol on its label.
  10. A material that causes cancer should have this symbol on its label.
  11. By releasing oxygen, these materials can cause a flammable material to burn more easily and have this symbol.
  12. Material escaping from these cylinders could cause frostbite.
  13. These materials can burn or destroy tissue (e.g. skin) immediately on contact.
  14. Material that is a skin or eye irritant should have this symbol.
  15. These materials cause or speed up a fire or explosion.

Answers: 1.D1  2.D2  3.B  4.E  5.D2  6.A  7.F  8.D3  9.B  10.D2  11.C  12.A  13.E  14.D2 15.C