1. LAB SAFETY & W.H.M.I.S.

2. Explain basic lab safety rules
Objectives
Explain basic lab safety rules
Understand the different types of safety rules that need to be followed in the Science Lab
Identify the hazards of a substance based on its WHMIS or hazard symbol

3. Why do we need to know about lab safety?
So the lab is safe for you to work in.
So the lab is safe for others to work in.
So that you are not a danger to yourself or others
So that others are not a danger to you!

4. Group Activity (page 9 of your textbook)
What is wrong with this picture? What is unsafe? Why?

5. Did you find them all?

6. THE FIRST RULE OF THE LAB
Always be safe.
If you are ever unsure about something, stop and ask your teacher

7. Workplace Hazardous materials information system
Commonly written as W.H.M.I.S. or just WHMIS.
WHMIS was designed so that everyone has access to information about the chemicals they use at school or work.
WHMIS requires all chemicals to have a Material Safety Data Sheet (MSDS) that contains information on the chemical’s
.... And much, much more!
Composition
Hazards
All names it can go by
First aid procedures
How to store it
How to dispose of it
How to transport it
Who made it
When it was made

8. WHMIS Symbols
There are 8 WHMIS symbols that you need to know.

9. WHMIS SYMBOLS A product may not have any WHMIS symbols
Never assume that a chemical is safe, even if there are no WHMIS warnings on it
All chemicals are dangerous, even in the right amount.
BUT.... A product may also have many WHMIS symbols
Think about it.
Could a flammable substance be poisonous?
Could a dangerously reactive material be corrosive?
Could a poisonous material have other toxic effects?
The answer to all of the above is YES!
The point is ALWAYS CHECK THE LABEL so you know the hazards of the materials you are working with.

10. Safety hazard symbols
Safety hazard symbols are commonly seen on household containers
Similar to WHMIS but WHMIS is for school and the work place
Hazard symbols provide 2 kinds of warnings:
The type of hazard
Whether the hazard is the container or the contents

11. Safety hazards and symbols
Have you seen these before? Where?
________________________________________________________________

12. Your turn
Work on Safety Questions –due by the end of class