LAB SAFETY AND

EQUIPMENT IN A

SCIENCE CLASSROOM

Lab Safety Contract

Contract stating that you agree to work and behave in a safe

manner while doing labs in this classroom.

Lab Safety Rules VERY important Must be followed at ALL times Failure to follow these rules will

result in you not being allowed to participate in the exercise and a failing grade for the assignment.

Lab Safety Rules Wear safety goggles at ALL times!!!! Learn what to do in case of an accident, for

example, getting an acid in your eyes. Report any and all accidents IMMEDIATELY to

your teacher. Know where fire extinguisher is located and

how to use it. Work in a well-ventilated area. Read directions for an experiment carefully two

or more times.

Lab Safety Rules Use clean lab equipment…NEVER use dirty

equipment. Do not perform experiments until instructed to do

so. NEVER eat or drink in the lab. Do NOT taste any

chemicals. Do NOT smell chemicals directly, you are to waft

the smell to your nose. Clean your work area and materials before leaving

the lab area. ALWAYS wash your hands when you are

finished…this should be the very last thing you do!!

What NOT to do in the Lab… Mix chemicals “for the fun of it.” Taste, touch or smell any chemical. Heat any chemical that you are not instructed to

do so. Heat a liquid in a closed container. Tilt a test tube towards yourself or anyone else. Perform any experiment that you do not have

written instructions for. Dump chemicals or broken glass into the sink or

the trash can.

SAFETY SYMBOLS…will appear when they must be observed.

Equipment Beaker-a

container, like a cup, with a wide mouth. Used for mixing, measuring and boiling.

Beaker Tongs-used to pick up and hold a beaker.

Equipment Erlenmeyer Flask-a

container used for:Swirling liquidSimple measuring,

heating, storing of mixed liquids

Does not break due to heat or chemicals

Flask Tongs-used to pick up and hold an Erlenmeyer flask or crucible

Volumetric Flask-used to measure one specific volume; mostly used in mixing solutions.

Equipment Ring Stand-a support for an iron ring or

a test tube clamp

Ring Clamp-fastens to a ring stand as a support for apparatus

Wire Gauze-spreads the heat of a flame

Equipment

Equipment Scoopula-to transfer small solids

Mortar and Pestle-used to grind chemicals into powder

Equipment Graduated Cylinder-for accurate

measurements of small volumes of liquids that cannot be done with beakers and flasks; used to measure volume by water displacement to calculate density.

Equipment Indicator (pH) papers-used to measure

the pH of liquids; turns/stays pink in acids and blues in bases.

Equipment Test Tube- used to hold, mix, or heat small

quantities of solid or liquid chemicals for experiments.

Test Tube Holder-used to hold one test tube

Test Tube Brush-to scrub/clean test tubes.

Equipment Test Tube Rack-holds several test tubes

in the upright position

Test Tube Clamp-fastens to a ring stand and holds a test tube.

Equipment Evaporating Dish-a container for

evaporating and heating small amounts of liquid

Watch Glass- clear glass with a concave shape that should never be used for heating. Can be used as a cover for an evaporating dish or beaker or to dissolve materials such as crystals and powders.

Equipment Goggles-to protect eyes when heating or

using glassware or chemicals

Microwell Plate-to observe many, small reactions at one time

Wash Bottle-hold and dispense distilled water

Equipment Stirring Rod-stir combinations of

materials; usually made of glass

Stoppers-used to seal test tubes and other types of glass to keep out airborne contaminants.

Equipment Funnel-holds filter paper and/or

aids in pouring liquids from one container to another.

Filter Paper-used to separate liquids from insoluble liquids. The solid is trapped while the liquid pours through.

Equipment Triple Beam Balance-an

instrument used to measure mass.

Spring Scale-measures mass and force. Unit is Newtons.

Equipment Crucible and Lid-used to heat

chemicals, usually solids; can withstand very high temperatures.

Pipe Stem Triangle-supports crucibles, evaporating dishes or funnels on a ring support when heating to high temperatures.

Equipment Hot Plate-used to heat objects

Equipment Eyedropper-transfer small amount

of liquid; usually made of glass and rubber.

Pipet-transfer small amounts of liquid; usually made of plastic and is disposable.