1. Solid Carbon Dioxide Demo
On Page 60 in your lab book, Answer these questions:
What is sublimation?
What causes a phase change?
List 3 types of phase changes and what happens to the heat energy to make each change occur

2. What is Solid Carbon Dioxide?
Dry Ice is frozen carbon dioxide and is very cold *C
Where else can we find carbon dioxide?
gas that we exhale during breathing
the gas that plants use in photosynthesis
It is also the same gas commonly added to water to make soda water and carbonate soft drinks.
Dry Ice changes directly from a solid to a gas -sublimation- in normal atmospheric conditions without going through a wet liquid stage. Therefore it gets the name "dry ice."

3. Demo #1
Write a hypothesis for what you think will happen when dry ice is placed in a balloon and the balloon is tied….
Remember to write it in an If…..Then….statement

4. What happened???
Now that you’ve watched the demonstration, write a summary about what you saw and why you think it occurred.

5. ?????????
When dry ice is exposed to warm air, a gas called carbon dioxide (CO2) is produced through a process called sublimation.
This is because dry ice is frozen carbon dioxide, and it needs to be really, really cold to stay frozen.
The balloon inflates because the carbon dioxide gas takes up lots of space, eventually filling the space inside and making the balloon stretch out

6. Demo #2
Write a hypothesis for what you think will happen when dry ice is added to water with food coloring and dish soap

7. What happened???
Now that you’ve watched the demonstration, write a summary about what you saw and why you think it occurred.

8. When you add dry ice to warm water, you immediately see the dry ice begin to bubble and create fog within its container.
This effect, which we've lovingly titled "burping, bubbling, smoking water" is directly caused by the rapid warming of the dry ice.
Dry ice is frozen, compressed carbon dioxide gas and when you add it to warm water, it combines with the water to create the fog (carbon dioxide and water vapor) that you see bubbling out of your cylinder.
Adding soap to burping, bubbling, smoking water creates a whole new effect. Instead of the dry ice just bubbling in the water to make a cloud, the soap in the water traps the carbon dioxide and water vapor in a soapy bubble.
The bubbles flow out of the cylinder releasing the gases in a brilliant cascade of fog.
Fun Fact……The bubbles actually keep getting smaller and smaller

9. Demo #3
Write a hypothesis for what you think will happen when dry ice is added to fruit juice

10. What happened???
Now that you’ve watched the demonstration, write a summary about what you saw and why you think it occurred.

11. ????????
When the dry ice is placed in the fruit juice it starts to sublimate
The carbon dioxide gas being released carbonates the juice!

12. Video Demos