Unit B: Matter and Chemical Change Section 1: Safety, Organizing Matter, physical and chemical properties Section 2: Understanding of the nature of matter through observation Section 3: Compounds Section 4: Chemical change

Unit B: 1.1 Safety in the Science Class

Why do you think lab safety is such a big deal?

Lab Safety Rules Page 95

Bunsen burner too close to edge of bench (and next to acetone! Boom!) Girl doing experiment on floor Fooling around at back bench Standing on box Glassware broken Girl with long hair working with flame No goggles Sucking on pipette Bunsen burner too close to edge of bench (and next to acetone! Boom!) Test tube rack balanced on the edge. Boy pouring liquid too close to face Unattended Bunsen burner Liquid on bench

Unsafe activity No goggles. Sucking on pipette. Test tube rack balanced on the edge. Liquid on bench. Glassware broken. Unlabeled beakers. Unattended Bunsen burner. Bunsen burner too close to edge of bench (and next to acetone! Boom!) Boxes in walkway. Unsecured glass apparatus. Boy pouring liquid too close to face. Girl with long hair working with flame. Girl reading at bench. Girl doing experiment on floor. Standing on box. Fooling around at back bench.

How do you know how dangerous?

Warning Caution Danger Safety Hazard Symbols The shape indicated how hazardous or dangerous the substance is Danger

Scared of having to remember what each symbol means? Don’t be such a . . . CoWarD!

The symbol inside the shape is a picture showing the TYPE of hazard Explosive Flammable Toxic Irritant Biological Electrical Corrosive

Practice danger explosive caution corrosive warning flammable

WHMIS Workplace Hazardous Materials Information System

copper (II) sulfate