1. ? What phase change is represented in the image above?
Does the arrow represent a gain in energy or a loss in energy?
Is this change endothermic or exothermic?

2. ? What phase change is represented in the image above?
Does the arrow represent a gain in energy or a loss in energy?
Is this change endothermic or exothermic?

3. ? What phase change is represented in the image above?
Does the arrow represent a gain in energy or a loss in energy?
Is this change endothermic or exothermic?

4. ? What phase change is represented in the image above?
Does the arrow represent a gain in energy or a loss in energy?
Is this change endothermic or exothermic?

5. ? What phase change is represented in the image above?
Does the arrow represent a gain in energy or a loss in energy?
Is this change endothermic or exothermic?

6. What phase change is represented in this image?
Is the air around the bottle gaining or losing energy?
Is this change endothermic or exothermic?

7. Does the red line or the blue line represent the water molecules in the previous slide?

8. What phase change is represented in this image?
Is the air around the pot gaining or losing energy?
Is this change endothermic or exothermic?

9. Does the red line or the blue line represent the water molecules in the previous slide?

10. This bowl is full of dry ice and is cooling the air around it.
What phase change is represented in this image?
Is the air around the bowl gaining or losing energy?
Is this change endothermic or exothermic?
This bowl is full of dry ice and is cooling the air around it.

11. Does the red line or the blue line represent the water molecules in the previous slide?

12. What phase change is represented in this image?
Is the water gaining or losing energy?
Is this change endothermic or exothermic?

13. Does the red line or the blue line represent the water molecules in the previous slide?