Page 10 - Ranger SPM 2022 - Science

Science SPM Chapter 1 Safety Measures in the Laboratory
Steps to Handle Accidents in the Laboratory
1. Some common types of accidents that occur in the laboratory are:
(a) Cut by broken glass
(b) Splashed by concentrated acids or alkalis
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(c) Small fires
(d) Contact with residue from the reaction of reactive metals
(e) Broken thermometer / mercury spillage
(f) Gas leaks
(g) Electric shocks
2. Figure 1.5 is a flow chart showing steps to be taken in the event of a chemical
substance spillage.

Form 4
Inform the teacher or Make the spillage area Prevent the spillage from
laboratory assistant a restricted zone spreading by using sand
immediately to form a boundary

Scoop the chemical
spillage Dispose of it safely

Figure 1.5 Steps to be taken in the event of a chemical spillage

3. Broken thermometers cause mercury
spillage. Mercury spillage can result
in mercury poisoning.
4. Mercury poisoning occurs if someone
touches it or it absorbs through the
skin in certain quantities. Mercury
is toxic and can attack the nervous
system, digestive tract, reproductive
system and the kidneys. A person
who inhales mercury vapour would
suffer from breathing difficulties
and headaches.
5. Figure 1.6 is a flow chart showing
steps to be taken if a mercury
spillage occurs.

Figure 1.6 Steps to be taken in the
event of a mercury spillage

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