1) which of the following can be safely done in a laboratory?

-eating food

-tasting the chemicals

-having hair loose

-washing hands

2) you have two clear liquids and you do not remember which is water and which is acid. in this situation, you should smell the contents of both beakers to determine which is the acid and which is the water.

-true

-false

3) in order to conserve materials, laboratory equipment like beakers can be reused, but must be cleaned and washed thoroughly to prevent the mixing of chemicals.

-true

-false

4)what is the correct way to read the volume of a liquid in a graduated cylinder?

-read the lowest part of the meniscus

-read the highest part of the meniscus

-read the middle part of the meniscus, halfway between the highest and lowest parts

-read the middle part of the meniscus and round off to the nearest significant figure

5) a materials safety and data sheet (msds) will describe safety issues and summarize risks for any chemical used in a laboratory.

-true

-false