Unit B Section 1.1

Question 1

What does a yellow triangle indicate?

Answer 1

caution

Question 2

What does an orange diamond indicate?

Answer 2

warning

Question 3

What does a red octagon indicate?

Answer 3

danger

Question 4

What are the two areas of special consideration for people working in the lab:

Answer 4

• understanding warning labels

- following safety procedures

Question 5

Each hazard symbol shows two separate pieces of information:

Answer 5

• The shape of the symbol indicates how hazardous a substance is
• the type of hazard, which is indicated by the picture inside the shape

Question 6

Common hazard warnings:

Answer 6

• flammable
• toxic
• explosive
• irritant
• corrosive
• biological
• electrical

Question 7

What does WHMIS stand for?

Answer 7

Workplace Hazardous Materials Information System

Question 8

purpose of WHMIS

Answer 8

protect people who use materials

that might be harmful at work

Question 9

WHMIS symbols:

Answer 9

• compressed gas
• dangerously reactive material
• oxidizing material
• poisonous and infectious causing immediate and serious toxic effects
• flammable and combustible material
• biohazardous infectious material
• corrosive material
• poisonous and infectious causing other toxic effects

Question 10

What is MSDS?

Answer 10

Materials and Safety DataSheets (MSDS) are

information sheets about specific chemicals.

Question 11

Lab Safety Rules:

Answer 11

• Listen to all instructions and follow them carefully.
• Wash your hands thoroughly after each activity and after handling chemicals.
• Wear safety goggles, gloves, or an apron as required.
• Smell a substance by fanning the smell toward you with your hand. Do not put your nose close to the substance.
• Do not taste anything in the lab
• Tie back loose hair and roll up loose sleeves.
• Never pour liquids into containers held in your hand. Place a test tube in a rack before pouring substances into it.
• Clean up any spilled substances immediately as instructed by your teacher.
• . Never look into test tubes or containers from the top. Always look through the sides.
• Never use cracked or broken glassware
• Label any container you put chemicals in.

Question 12

What is the matter?

Answer 12

something that has mass and occupies space.