Lab Safety Quiz B

What is the proper technique for handling chemicals in the laboratory?

• Taste small amounts to identify them
• Touch chemicals to feel their texture
• Consider all chemicals dangerous and only handle as instructed
• Smell chemicals directly from their containers

When taking chemicals from their bottles, you should:

• Take extra in case you need more later
• Check the label once quickly
• Return unused portions to the original container
• Check the label twice and take only what you need

What is the correct procedure for filling a pipet?

• Use mouth suction carefully
• Use a rubber bulb or pipet pump
• Pour directly into the pipet
• Dip the pipet into the solution

When diluting strong acids, what is the proper method?

• Add water to acid quickly
• Add acid to water carefully and stir
• Mix equal parts simultaneously
• Add water to acid slowly

When transferring reagents between containers, you should:

• Hold containers close to your body
• Hold containers away from your body
• Transfer over your workspace
• Transfer near other chemicals

How should flammable hazardous liquids be handled?

• Over an open flame
• Near a heat source
• Over a pan to contain spills
• Directly on the lab bench

What is the proper protocol regarding laboratory chemicals?

• Share them with other labs
• Take them home for projects
• Never remove them from the lab
• Store them in personal lockers

When transporting acids and chemicals in the laboratory, you should:

• Run to save time
• Hold them securely and walk carefully
• Carry multiple containers at once
• Ask someone else to carry them

What should you do with unused chemicals?

• Save them for later use
• Return them to the original container
• Dispose of them as instructed
• Share them with other students

What is the correct approach to chemical vapor exposure?

• Smell directly from the container
• Use the demonstrated wafting technique
• Hold the container close to your face
• Cover the container immediately