1. 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?

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

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

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

5. List the steps of Scientific Inquiry in the correct order:

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

7. The aluminum foil changed from shiny to lack luster
Qualitative Data

8. 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?

9. 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?

10. 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?

11. 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?

12. The temperature of the
liquid rose 20 degrees
Quantitative data

13. newsela.com/join Z9MRDH My first time here
Read & take quiz….it will be averaged as part of an assignment score….

14. Back to the races!!!!