Chem safety/equip 24-25

What piece of lab equipment is used to weigh chemicals?

• Test tube brush

• Beaker

• Mass balance

• Hot plate

What piece of lab equipment is used for measuring exact volumes of liquids?

• Graduated cylinder

• Beaker

• Hot plate

• Mass balance

Should you ever put used chemicals back into the original container?

• Yes, we do not want to waste good chemicals

• No, because any unused chemicals should be disposed of in the proper waste container

• No, you should leave them out for the teacher to deal with

• Yes, it has no affect on the chemicals if you mix unused in the original container

What should you do before leaving the lab at the end of class?

• Keep protective wear so you can wear it throughout the day

• Leave chemicals out without properly disposing of them

• Leave the lab equipment dirty

• Clean up all equipment, dispose of chemicals in the proper waste containers, and wash hands

When should you begin the experiment?

• As soon as the bell rings

• Once the teacher is present and you have completely read and understand all procedures

• Before the teacher comes into the room.

• Never, I will take the zero.

How should you come dressed for lab?

• Hair tied back

• Closed toe shoes

• No dangling jewelry or clothing

• All of these are correct

When should safety goggles be worn?

• Only when chemicals are being mixed

• Any time you use chemicals, glassware, or heat.

• Only while the actual reaction is happening

• They aren't important so only when I feel like it.

What is the FIRST thing you should do if a fire starts in the lab?

• Alert the teacher

• Call 9-1-1

• Get the fire extinguisher

• Ignore it, somebody else will put it out.

What is the first thing you should do if you are injured or there is some sort of accident?

• Cover it up

• Call the nurse

• Tell the teacher

• Call 9-1-1

What piece of lab equipment is used for holding equipment over a fire?

• Wire gauze

• Beaker

• Erlenmyer flask

• Forceps