Unit 1 Test B: Units and the Scientific Method 2.0

What is the part of an experiment that serves as a standard for comparison?

• Control Group

• Constant

• Hypothesis

A testable prediction that predicts a cause and effect relationship between variables is a(n).

• Analysis

• Hypothesis

• Observation

Where does the dependent variable go on a graph?

• X-axis

• Y-axis

• In the Title

Why is it advisable to use tongs when taking a beaker off a laboratory burner?

• It prevents spilling.

• It prevents the beaker from breaking.

• It looks cool.

A factor in an experiment that changes in response to the independent variable is the ____.

• Control Group

• Independent Variable

• Dependent Variable

Using the graduated cylinder to the right, pick the accurate AND precise measurement below.

• 19.0 mL

• 20.0 mL

• 18 mL

7. What is the first thing you should always do before starting a lab? (1 pt)

• Read the lab instructions
• Start the lab immediately
• Ask a friend for help

8. Gloves are a safety item in the lab used to protect the hands. (1 pt)

• True

• False

9. Shelley accidentally drops a test tube and it shatters. What two things should she make sure to do? (2 pts)

• Pick up the pieces with bare hands and continue the experiment
• Notify the teacher and clean up the mess using appropriate safety equipment
• Ignore it and continue with the experiment

10. What should you always do at the end of a lab? (1 pt)

• Leave immediately
• Leave the equipment on
• Clean up and turn off all equipment