7th Grade Midterm Review - MATTER (p1)

What should you do if you break glass in the lab?

• Tell the teacher.
• Sweep up the glass.
• Pick up the glass with your hands.
• Ignore it; the teacher will clean it up when she sees it later.

When you finish working with chemicals, biological specimens, and other lab substances, always

• treat your hands with skin lotion.

• wash your hands thoroughly with soap and water.

• wipe your hands on a towel.

• wipe your hands on your clothes.

If you do not understand a direction or part of a laboratory procedure, you should

• figure it out as you do the lab.

• try several methods until something works.

• ask the teacher before proceeding.

• skip it and go on to the next part.

It’s okay to pick up broken glass with your bare hands as long as the glass is placed in the trash.

• True
• False

What is the volume of the liquid in the cylinder?

• 20.5 mL
• 25 mL
• 22 mL
• 20.4 mL

What is the volume of the liquid in the cylinder?

• 9 mL
• 10 mL
• 8 mL
• 6 mL

This is used to find the volume of a liquid

• graduated cylinder

• inference

• observation

• triple beam balance

What does mass measure?

• the amount of stuff or matter in an object

• the gravitational pull on an object

• the amount of space something takes up

• measure of how hot or cold something is

What does volume measure?

• the amount of stuff or matter in an object

• the gravitational pull on an object

• the amount of space something takes up

• the measure of how hot or cold something is

What does it mean when you see this lab safety symbol?

• working with glassware/chemicals

• wear goggles

• working with sharp objects

• working with electricity

• working with chemicals