Dry Ice Lab

Dry Ice Lab

Preparation Questions:

1. Taste the apple juice.  How does it taste, be descriptive.

2. Measure the temperature of the rubbing alcohol before the dry ice is put in.

Observe dry ice:

3. What happens when dry ice is left on your table?

4. How is it different than regular ice?

5. Place a metal object on the dry ice what happens?

6. What happens when dry ice is placed in cup with plastic wrap on top?

7. Pour the dry ice vapor over the lit candle.  What happens to the candle?  Explain why this happens.

Dry ice in water:

8. What happens when dry ice is placed in warm water?

9. Is the water boiling?  Why are there bubbles going up the cup?

10. When “steam” comes out of the beaker, it goes down instead of up like steam from a pot of boiling water.  Why do you think this happens? (Hint: think about what you know about density!)

11. Observe the dry ice after it has been in the water for a longer period of time.  What happens to the bubbles and the dry ice?

Dry ice in soapy water:

12. Feel the bubbles from the dry ice in soapy water.  How do they feel different from regular bubbles?

13. What happens when you pop the bubbles?

Apple juice & dry ice:

14. Drink the apple juice after the dry ice has become gas.  Does it taste any different?

15. Does it remind you of anything else that you drink? Compare it to other beverages.

Dry ice & rubbing alcohol:

16. Measure the temperature after the dry ice is put in the beaker.

17. Carefully place a leaf or flower into the beaker.  After a minute, ask Ms. Cotta to take it out.  What happened to the plant? Be very descriptive.

18. Why did this happen to the plant?

Questions:

19. What is it called when a substance such as dry ice goes from solid directly to a gas?

20. How is dry ice different from water ice?  How is the temperature different? Water freezes at 0 degrees Celsius.

21. Did the dry ice float or sink in the water?  Why would it do this explain and compare it to water ice.