Study guide: Dec 2023 10th

Before starting an investigation or lab procedure, you should

• try an experiment on your own

• open all containers and packages

• read all directions and make sure you understand them

• handle all the equipment to become familiar with it

If you get hurt or injured in any way, you should

• tell your teacher immediately

• find bandages or a first aid kit

• go to the principal's office

• get help after you finish the lab

If you have unused liquids after finishing your procedure, you should

• mix them together in a bucket

• put them back into their original containers

• put them away where your teacher tells you to put them

If electrical equipment has a cord or plug that appears damaged, you should

• unplug the equipment by pulling on the cord

• let the cord hang over the side of a counter or table

• tell your teacher about the problem immediately

• wrap tape around the cord to repair it

When working with materials that might fly into the air and get into your eyes or someone else's eyes, you should wear

• goggles

• an apron

• gloves

• a hat

Before doing experiments involving a heat source, you should know the location of the

• door

• windows

• fire extinguisher

• overhead lights

When working with a flame or heat source, you should

• tie back long hair that hangs in front of your eyes

• heat substances or objects inside a closed container

• touch an object with your bare hand and see how hot it is

• throw hot objects into the trash when you are done with them

As you cut with a knife or other sharp instrument, you should move the instrument

• towards you

• away from you

• vertically (up and down)

When heating a test tube, it is important to point the test tube

• towards your partner

• towards yourself

• away from you and others

• downward

David wears glasses. What does David need to do before a lab with fire and chemicals?

• clean his eyeglasses

• nothing, the eyeglasses offer enough protection

• wear safety goggles over the glasses

• wear safety goggles in his hair