LAB SAFETY RULES, SAFETY SYMBOLS AND

LAB TOOLS

EXPERIMENTAL SKILLS (PART 1)

LAB SAFETY RULES

1. 2.

3. 4.

5.

6.

7.

8. 9. 10.

SAFETY SYMBOLS

This symbol means that a substance is

self-reactive and can explode if not

handled correctly.

Explosive Highly Flammable

This symbol warns you that a chemical

will catch fire easily.

Corrosive

This symbol tells you that a chemical

will attack your skin if you get it on

you.

Toxic

This symbol means that a chemical is poisonous. Poisons can kill.

Radioactive

This symbol means emits radiation or

which causes health hazards.

Environmental danger

This symbol means that if used wrongly, it could cause harm to the

environment.

Oxidising

Oxidising substances do not burn

themselves, but they provide oxygen for

flammable substances to burn.

Gas pressure

Pressurized gas, keep away from heat.

Health hazard

Substance is irritant or hazardous.

Irritant

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

immediately..

LAB TOOLS

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.

TEST TUBE

Used to hold, mix

or heat small

quantities of

liquids or solids.

BEAKER

simple container for stirring, mixing

and heating liquids commonly used

in many laboratories.

Most also have a small spout (or

"beak") to aid pouring.

CONICAL FLASK

Used for mixing, heating,

cooling, dissolving,

precipitation and boiling.

BUNSEN BURNER

• 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

tripod

gauzeIs used as a platform to hold

and support glassware, such

as beakers and flasks while

heating in experiments .

CLAMP AND STAND

stand

clamp Holds test tubes, Round

bottom flasks for

distillation experiments

,and other equipment

such as burettes; which

are most often used

in titration experiments.

FUNNEL AND FILTER PAPER

Funnel

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

liquids.

• Can’t stand alone on lab

bench so should be used with

clamp and stand.

•More efficient heating than

flat bottom flask.

SEPARATING FUNNEL

Used to separate liquids that

don’t dissolve.

Ex: oil and water

DELIVERY TUBE

• 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

the tube.