Density & Liquids

By the end of class, I should be able to:

• Explain the difference between a manipulated and control variable.
• Design a procedure and carry it out.
• Describe some characteristic properties of two liquids.

Please do the following now:

1. Update your Table of Contents in your notebook. The header row should contain the following:

Topic	Date	Class Goal / Activity	Vocabulary
Matter	9/4/12	Characteristic Properties of Liquids	Characteristic

2. Density Calculation Review Set

September Process Words

• Investigate
• Produce
• Demonstrate (7th)
• Emphasize (7th)
• Judge (8th)
• Weigh (8th)

*	Will ice always float in a liquid?

Variables

• Manipulated (Independent) - This is the variable that I change (or manipulate) in an experiment.
• Responding (Dependent) - This is the variable that I measure. It changes depending on what I do to the manipulated variable. This is known as a response.
• Control - There are many control variables in an experiment. I do the best that I can to “control” these items from changing.

In an experiment, a goal is to analyze the relationship between two variables. By changing one and watching what happens to its partner, I can hopefully see a relationship. It is important to keep other variables from changing so I can distinguish what happens to my responding variable.

Inquiry Project: Background Organizer