Laboratory Safety and Equipment

These 5 things would hold a test tube in a beaker of boiling water above a Bunsen burner

1. ring stand 2. iron ring 3. wire gauze 4. utility clamp/boss head and clamp 5. Bunsen burner

Funnels

A funnel is used to: - Aid in the transfer of liquids from one vessel to another - Hold filter paper whilst filtering.

Graduated Cylinders

A graduated cylinder is used to measure volumes of liquids. Rules for accurate use: Read on a level surface Read at eye level Read from the base of the meniscus: curve of the liquid **If the liquid is mercury, the meniscus will be upside down. Still read from the base**

Graduated Pipettes

A graduated pipette measures and delivers exact volumes of liquids. more accurate than graduated cylinder

Retort/Ring Stand

A retort stand (also called a ring stand) are a safe and convenient way to support equipment holding reactions that require heating or little movement.

Watch Glass

A watch glass is used to hold small amounts of solid, such as the products of a reaction. They can also be used as a cover for an evaporating basin or beaker. As they are not always made of heat resistant glass, they should not be heated

Test Tube SAFETY

Always heat test tubes at an angle Always point the mouth of the test tube away from yourself and others Heat by moving over flame back and forth instead of straight on all at once

Beakers

Beakers are used to hold or heat liquids that do not release gases or are unlikely to splatter if stirred. Very Poor item to measure volumes + 5% error.

Bunsen Burners

Burners are used to heat non-flammable liquids and solids.

Crucible and Cover

Crucibles are used to heat solids, mainly metals, to very high temperatures. The cover can be used to contain any smoke particles

What should one do if equipment is cracked/damaged?

Discard in the broken glass bin if damaged

Erlenmeyer Flasks (Conical Flasks)

Erlenmeyer Flasks are used to heat or hold liquids that release gases when heated, or that are likely to splatter when stirred

Chemistry is a subject of what 3 things?

Foreign lang, mathematics, science

Hot Plate

Hot Plates will be used to gently heat any flammable chemicals

If a spill happens, what should one do?

Notify the teacher

Stoppers

Rubber and Cork Stoppers are used to close test tubes and flasks, thus preventing contamination and spilling. Containers should NEVER be heated when there is a stopper in place - pressure can build up and explosion could occur.

Scoopula or Spatula

Scoopulas and spatulas are used to dispense solid chemicals from their containers Sccopulas and spatulas MUST be cleaned and dried between each use.

Test Tubes

Test tubes are used to mix chemicals in. They are also used to heat chemicals as well. 2 sizes: 18 x 150mm (medium - large) 13 x 100mm (Micro)

Clay Pipe Triangle

The clay pipe triangle is used as a support for crucibles when being heated over a burner. They can also be used to support a funnel when filtering They rest upon a ring on a retort stand or on a tripod

Dropper Pipettes

The dropper pipette is used to transfer a small volume of liquid, usually one drop at a time - you will usually use disposable plastic pipettes.

Evaporating Dish

The evaporating basin is used for heating stable solid compounds and elements, as well as evaporating solutions

Stirring Rod

The stirring rod will: Manually stir solutions Assist in pouring liquids Transfer a single drop of a solution to a test paper

What should one do if an eye accident occurs?

Wash the eye with copious amounts of water for at least 5 mins

Weighing Boats or Weighing Paper

Weighing boats and paper are used to determine the mass of solid chemicals NEVER place chemicals directly onto the balance pan as it will leave a residue

Wire Gauze Mat

Wire gauze mats sit on top of an iron ring or a tripod to provide a platform on which to stand a beaker, flask or evaporating dish. Gauze also distributes heat

What is a fume hood?

a ventilated enclosure in a chemistry laboratory, in which harmful volatile chemicals can be used or kept.

Holding 50 mL of boiling water

beaker

What color are many liquids?

clear

Iron Ring

component of Ring Stand: Iron rings connect to the retort stand, and when used with a wire gauze mat provide a stable and elevated platform for a beaker to rest when heated. Will hold a clay pipe triangle and funnel during filtering or a clay pipe triangle and crucible when heating

Boss Head and Clamp/Utility Clamp

component of Ring Stand: The boss head and clamp connect to a retort stand to hold thermometers, burettes and test tubes.

Heating a dissolved substance in water to drive off water

evaporating basin

Transferring small quantities of liquid solutions from 1 container into another

eye dropper/pipette

Protects your eyes from splattering solids and splashing liquids

goggles/safety glasses

What things should one wear in a lab?

goggles/safety glasses, close-toed shoes, long hair in a ponytail

Measuring approximate amounts of liquids

graduated cylinder

Measuring exactly 43 mL of water

graduated cylinder

Pouring 50 mL of liquid from one container to another

graduated cylinder (beaker accepted too)

Heating substances to a constant temperature

hot plate

What things should one NOT wear in a lab?

jewelry, sandals, open-toed shoes, loose clothing

When should eye protection be worn?

must be worn at all times while handling chemicals or when sharp objects are being used

Dropping small quantities of liquids into test tubes

pipette

What should one do if an injury or accident occurs?

report all incidents to teacher

Removing solid chemicals from a reagent bottle

scoopula/spatula

Why are lab safety rules necessary?

so students don't injure themselves/classmates

What should one do if a major fire burn accident occurs?

stop, drop, and cover with a fire blanket. do not remove clothing attached (it may have melted to the person) and seek medical attention immediately

Holding test tube over a Bunsen burner for heating

test tube holder

Determine if water is boiling

thermometer

Holding hot objects in flame

tongs

What should one do if a minor fire burn accident occurs?

wash the affected area for 10 mins under cold running water

Covering a beaker of boiling water to prevent splattering

watch glass

Rinsing out glassware w distilled water

water bottle

When should lab coats/aprons be worn?

when doing practical work

When should gloves be worn?

when handling certain chemicals (not acids, because the glove could melt to a person's hand) or if required to hold something hot