Chem Quiz 1

A student walks into a chemistry lab working with acids. Which personal protective equipment does she need? (choose all that apply)

• Goggles

• Open toed shoes

• Apron

• Gloves

The variable in an experiment that you add expecting to cause a change. The variable being tested.

• dependent variable
• independent variable
• data
• control group

The variable that depends on the independent variable.  The variable that gets measured.

• control group
• dependent variable
• experimental variable
• independent variable

If you were testing how well different dish soaps cleaned grease, the independent variable would be the:

• dish type
• amount of grease
• dish soap type
• grease type

Dory set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?

• distance traveled by the ball
• height of the ramp
• mass of the ball
• ball type

A factor in an experiment that stays the same.

• control group
• constant
• dependent variable
• experimental group

Which word means that you do not need a microscope to see it; it is a large object.

• Big

• Macroscopic

• Tiny

• Submicroscopic

Which word means you cannot see the object even if you had a microscope?

• Big

• Macroscopic

• Tiny

• Submicroscopic

What is the study of matter and it's interactions and changes?

• Physical Science

• Biology

• Physics

• Chemistry

Esther became interested in insulation while her parent’s new house was being built. She decided to determine which insulation transferred the least heat. She filled each of 5 jars half-full with water.

She sealed each jar with a plastic lid.Then she wrapped each jar with a different kind of insulation. She put the jars outside in the direct sunlight. Later, she measured the temperature of the water in each jar. What is the independent variable?

• The type of insulation

• The temperature of the water

• Number of houses

• The amount of sunlight