1. Explain how temperature affects the mass of water
Objective:
Explain how temperature affects the mass of water
Warm-Up
Pd. 1, 2, 8:
How does a hot air balloon work??
Pd. 3/5
Go to “Thermometer Exit Ticket” in Mrs. Kelly folder and answer questions on interactive powerpoint.

2. Write Your Prediction:
KEY QUESTION
Write Your Prediction:
Does hot water have
More? Less? Or the Same?
mass as cold water?

3. Lab Procedures Measure and record the mass of the empty cup.
Carefully measure 50mL of cold water in the graduated cylinder. Use an eyedropper & get down eye level to get the exact volume.
Pour the water into the cup.
Measure the mass of the cup with cold water & record the data.
Return cold water & dry out the cup
Repeat steps with 50mL of hot water.

4. Results Mass of empty flask and cap ______ g
Mass of 50mL of cold water, flask, and cap ______ g
Mass of 50mL of hot water, flask, and cap ______g

5. C – A = the mass of just the hot water
B – A = the mass of just the cold water
____ grams
___ grams
___ grams
____ grams
Mass of hot water
Mass of cold water
___
___
grams
grams

6. C – A = the mass of just the hot water
B – A = the mass of just the cold water
88.9 grams
39.8 grams
88.2 grams
39.8 grams
49.1 grams
48.4 grams
Mass of hot water
Mass of cold water
48.4
49.1
grams
grams

7. How much did the mass of 50 mL of water increase with a drop in temperature?

8. Mass of cold water
grams
49.1
Mass of hot water
grams
48.4
.7 grams

9. Mass of cold water
grams
49.1
Mass of hot water
grams
48.4
.7 grams

10. Why does cold water weigh more than an equal volume of hot water?

11. BrainPop Username: eastmiddle1 Password: bulldogs
BrainPOP | Matter Changing States
Username: eastmiddle1
Password: bulldogs

12. Vocabulary!! (Add to your vocab. Paper)
Viscosity: a liquid’s resistance to flowing Add to sentence box: *high viscosity = flows slowly, low viscosity = flows quickly
Click on the picture below.
Test different liquids, using the same temperature for both liquids. (You can change the temp., just change both of them to the same thing.
Note: There is a pre-made viscosity lab contained in the teacher folder.