When carrying out an investigation, safety is of the utmost importance. To avoid accidents and injury, it is important to follow the laboratory safety rules. 1. Follow the teacher’s direction exactly. 2. Safety glasses should be worn during all practical work.
3. When heating a substance in a test tube, do not look into the mouth of the test tube. Point it away from you and the other students in your class.
4. When using a Bunsen burner, tie back long hair and clear all flammable materials (such as paper) from the bench. Never have a flammable liquid close to the Bunsen burner flame.
5. Test for odours by wafting your hand over the sample and sniffing with caution. 6. Never rush or run in the laboratory. 7. Store your schoolbag at the back of the laboratory. 8. If an accident occurs, report it to the teacher immediately.
9. Before you leave the laboratory, wash any equipment used and put it back in the correct place. Leave the bench clean and dry. Wash your hands with soap and water.
Safety Symbols
It is important to recognise and understand the safety symbols displayed on the substances you use in the laboratory. Toxic
These substances may cause serious health risks or death if they are inhaled, swallowed or if they penetrate the skin.
Corrosive
These substances can cause chemical burns to skin, eyes and other materials.
Explosive
These substances may explode if ignited in air or exposed to heat.
Flammable These substances may easily catch fire in a laboratory. Caution
This symbol is used for less serious health hazards, such as skin irritation.
Oxidising
Dangerous to the environment
These substances may produce heat when they react with other substances.
Substances with this symbol need to be disposed of carefully and should not be poured down the sink.
