lab safety rules, safety symbols and tools
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LAB SAFETY RULES, SAFETY SYMBOLS AND
EXPERIMENTAL SKILLS (PART 1)
LAB SAFETY RULES
8. 9. 10.
This symbol means that a substance is
self-reactive and can explode if not
Explosive Highly Flammable
This symbol warns you that a chemical
will catch fire easily.
This symbol tells you that a chemical
will attack your skin if you get it on
This symbol means that a chemical is poisonous. Poisons can kill.
This symbol means emits radiation or
which causes health hazards.
This symbol means that if used wrongly, it could cause harm to the
Oxidising substances do not burn
themselves, but they provide oxygen for
flammable substances to burn.
Pressurized gas, keep away from heat.
Substance is irritant or hazardous.
Dilute solutions of acids and alkalis are
labelled with the 'irritant' symbol.
Anyone using an irritant substance should
take care to wash any spills off their skin
When you perform an investigation and then, afterwards, write down what happened; you may need to draw how the apparatus was arranged.
To save time in science, there are special ways to draw the apparatus.
In the next set of slides, you will know names of different apparatus, the use and 2D drawing of each apparatus.
Used to hold, mix
or heat small
liquids or solids.
simple container for stirring, mixing
and heating liquids commonly used
in many laboratories.
Most also have a small spout (or
"beak") to aid pouring.
Used for mixing, heating,
precipitation and boiling.
Apparatus for supplying heat
The gas used is methane
which reacts with oxygen from
air, forming carbon dioxide and
water that escape as gases.
TRIPOD AND GAUZE
gauzeIs used as a platform to hold
and support glassware, such
as beakers and flasks while
heating in experiments .
CLAMP AND STAND
clamp Holds test tubes, Round bottom flasks for
,and other equipment
such as burettes; which
are most often used
in titration experiments.
FUNNEL AND FILTER PAPER
used for separating solids
from liquids via filtering,
Using filter paper.
ROUND BOTTOM & FLAT BOTTOM FLASK
Used for heating liquids.
The design of the flat-
bottomed flask allows it to
stand alone on the lab bench.
Used for heating or boiling
Cant stand alone on lab
bench so should be used with
clamp and stand.
More efficient heating than
flat bottom flask.
Used to separate liquids that
Ex: oil and water
The delivery tube converts any
liquid or gas flowing through
a Rubber tube into a free flow.
A rubber tube can be
connected to or from the top of