Question

1. horseplay or practical jokes in the laboratory are *

always against the rules
okay
not dangerous
okay if you are working alone

1. if a piece equipment is not working properly, stop, turn it off, and tell *

the custodian
your lab partner
your best friend in the class
the science instructor

1. when you finish working with chemicals, and other lab substances, always

treat your hands with skin lotion
wash hands thoroughly with soap and water
wipe hands on a towel
wipe your hands on your clothes

Explanation:

1. Horseplay or practical jokes in a laboratory can cause accidents and disrupt the scientific - work environment, so they are always against the rules.
2. When equipment malfunctions in a lab, the science instructor should be informed as they have the knowledge and authority to handle the situation.
3. After working with chemicals and lab substances, hands should be washed thoroughly with soap and water to remove any potential contaminants.

Answer:

1. always against the rules
2. the science instructor
3. wash hands thoroughly with soap and water