Grade 11 Chemistry Lab Safety Test - SCH3UP

Exploding Bomb

- For explosion or reactivity hazards

- Materials may be self-reactive and have explosive reactions

Flame

- For fire hazards and materials that can burn and become hot in air

- May be self-reactive/self-heating, emit flammable gases in water and decompose slowly

Flame Over Circles

- For oxidizing hazards and materials that can cause/increase a fire

- Can cause skin or eye burns

Gas Cylinder

- For gases under pressure

- Materials that can explode by pressure/heat/dropping

Corrosion

- For corrosive damage to metals, as well as skin and eyes

- Can cause irritation to skin and eyes, lung damage, severe burns/tissue damage after a long time

Skull and Crossbones

- Causes death or toxicity with short exposure to small amounts

- Small volumes may be fatal or toxic if inhaled, ingested or absorbed through skin

Health Hazard

- May cause or suspected of causing serious health effects

- May contain carcinogens, damage DNA, reproductive capability, facilitate respiratory problems

Exclamation Mark

- May cause less serious health effects or damage to the ozone layer

- Can cause allergies, skin, eye or respiratory irritation

Environment

- May cause damage to the aquatic environment

- Can create environmental risks, pollute and destroy habitats

Biohazardous Infectious Material

- For organisms or toxins that can cause diseases in people or animals

- May cause shock

Explosive

- Container can explode if heated or punctured

- Flying pieces of container can cause injury

Poison

- Product can cause illness or death if swallowed, licked, or inhaled

Flammable

- Product or its fumes may catch fire easily if near heat, flames, or sparks

- Rags soaked in product may burn on their own

Corrosive

- Product can burn skin, eyes, throat and stomach if ingested

- Contents may also eat away at other materials

Workplace Hazardous Materials Information System

What does WHMIS stand for?

Hazardous Household Product Symbols

What does HHPS stand for?

Triangle - CONTAINER is dangerous

Octagon - CONTENTS are dangerous

HHPS Symbol Frames

Caution: Temporary injury, lots of exposure maybe fatal

Danger: May cause permanent injury or death

Extreme Danger: low amounts may cause death or serious injury

HHPS Signal Words

WHMIS: standardize labelling of dangerous materials in all workplaces

HHPS: for danger to be specified in the use of consumer products

HHPS and WHMIS purpose

Dynamite, Fireworks

Examples of Exploding Bomb

Gasoline, Paint Thinner

Examples of Flame

Hydrogen Peroxide, Chlorine

Examples of Flame over Circle

Propane tank, Fire Extinguisher

Examples of Gas Cylinder

Battery Acid, Drain Cleaner

Examples of Corrosion

Insect sprays, Toiletries (eg. Lysol Spray)

Examples of Skull and Crossbones

Washing detergent, toilet cleaner

Examples of Health Hazard

Ammonia, bleach

Examples of Exclamation Mark

Oil spill, Lead

Examples of Environment

Viruses, yeasts, molds

Examples of Biohazardous Infectious Material

Aerosol cans, fireworks

Examples of Explosive (HHPS)

Paint, windshield washer fluid

Examples of Poison (HHPS)

Nail polish, gasoline

Examples of Flammable (HHPS)

Over cleaner, batteries

Examples of Corrosive (HHPS)

1. Point tubes to wall when heating liquid

2. Never leave a burner unattended

3. Dispose waste as directed by teacher

4. Wear goggles

5. Have a clean area

6. No horseplay

7. No food

8. Smell chemicals by wafting

9. No tasting chemicals

10. Tie long hair

11. Never work alone

12. Report all injuries

13. Use assigned scoopula

14. Notify about damaged equipment

15. Use cold water if burned

Rules of Lab Safety

Beaker

- Holds solids/liquids that WON'T release gases or splatter if stirred or heated in a reaction

Erlenmeyer Flask

- Holds solids/liquids that MIGHT release gases or splatter if stirred or heated in a reaction

Florence Flask

- For the mixing of chemicals, the narrow neck prevents splatter during reaction

Graduated Cylinder

- Used to measure volumes of liquid

Gas Collecting Bottle

- Used when large amount of gases are produced and must be collected via the DISPLACEMENT of water

Test Tube

Beaker Tongs

- Used to move beakers with hot liquids

Crucible Tongs

- Used for handling crucibles and picking up other hot objects (besides beakers)

Test Tube Holder

- Used to hold a test tube too hot to handle

Test Tube Brushes

- Used to clean test tubes and graduated cylinders

Test Tube Rack

- Used for holding and organizing test tubes

Rubber Stoppers

- Used to close containers to avoid spillage or contamination

- Container never heated with stopper

Spot Plate

- Used to perform many small scale reactions at once

Watch Glass

- Hold a small amount of solid, such as a precipitate

Glass Stir Rod/Stirring Rod

- Used to manually stir solutions or to transfer a single drop of a solution

Medicine Dropper

- Used to transfer a volume of liquid less than 1 mL

- Top of medicine dropper is a "rubber bulb"

Litmus Paper

- To identify pH, Red paper for bases, Blue paper for acids

Forceps/Tweezers

- Used to pick up small objects

Funnel

- Used to aid in transferring liquid from one vessel to another

Mohr Pipet

- Measures and delivers exact volumes of liquids

Wash Bottle

- Uses a spout to deliver a wash solution in a specific area (distilled water is the only liquid used)

Weighing Boat

- Used to weigh solids that will be transferred to another vessel

Spatulas

- Used to dispense solid chemicals from their containers

Bunsen Burner

- Used to heat nonvolatile liquids & solids

Evaporating Dish

- Used for the heating of stable solid compounds and elements

Crucible

- Used to heat solids, often metals to high temperatures

Clay Triangle

- Support for crucibles when heating on a burner

Glass Plates

- Surface used for semi-micro scale experiments: drop reactions and testing of acids & bases

Triangular File

- Used to primarily cut a glass rod

Ringstand/Retort Stand

- Safe and convenient way to perform reactions with a bunsen burner

Iron Rings - Part of Ringstand

- Connects to ringstand to provide a stable elevated platform

Utility Clamps - Part of Ringstand

- Used to secure test tubes, distillation columns and burets to ringstand

Double Buret Clamps - Part of Ringstand

- Used to clamp burets-long graduated tubes- in titration (where you find concentration of unknown solution)

Wire Gauze - Part of Ringstand

- Sits on iron ring and provides place to stand beaker

Pressed Fiber Pad - Part of Ringstand

- Square of ceramic fiber to use as a surface for hot beakers

(used to not come in contact with a cold counter and shatter)

Strikers - Part of Ringstand

- Used to light bunsen burners

Scoopula - used for transferring dry chemicals