Quick Question: Use the data from yesterday’s lab to answer these questions. Happened during the lab that you thought was surprising? Why? Describe how the heat changed and predict what caused that to happen. What questions did this activity generate for you?

Objective: I understand variables that affect the measurement of speed.

What Questions Came Up? Review copper chloride and aluminum foil lab 5 minutes 75 min

White Board Practice: (Please don’t use my markers from the big board)

List the steps of Scientific Inquiry in the correct order:

Name the part of the type of data shown here: Quantitative Data 50 grams of copper chloride was mixed with 100 ml of water

The aluminum foil changed from shiny to lack luster Qualitative Data

What is the independent variable? Flask 1 contained 20 grams of copper chloride and 100 ml of H2O Flask 2 contained 10 grams of copper chloride and 100 ml of H2O Flask 3 contained 30 grams of copper chloride and 100 ml of H2O What is the independent variable?

What is the amount of residue remaining called? There were 2 grams of residue left over in flask 1. There was 1 gram of residue left over in flask 2. There was .5 grams of residue left over in flask 3. Dependent Variable What is the amount of residue remaining called?

What item is the control? Flask 1 contained 20 grams of copper chloride and 100 ml of H2O Flask 2 contained 10 grams of copper chloride and 100 ml of H2O Flask 3 contained 30 grams of copper chloride and 100 ml of H2O What item is the control?

What item is the control? What item is the independent variable? Each group used a 5 cm2 piece of aluminum foil. The first beaker had 25 ml of CuCl2 . The second beaker had 45 ml of CuCl2 . The third beaker had 65 ml of CuCl2 . What item is the control? What item is the independent variable?

The temperature of the liquid rose 20 degrees Quantitative data

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Back to the races!!!!