1. Challenge #1 What’s going on?
Phase Changes
Challenge #1 What’s going on?
Shannon Ventresca 2014

2. Which phase change is taking place?
You are heating water on the stove and you see steam.
2. You see a smoky substance coming off of dry ice.
3. You notice your iced tea glass is wet on the outside.
4. You leave a case of water in the car, but the temperature dropped below zero that night.
5. You forget the ice cream in the trunk,
and it’s 90 degrees out

3. evaporation sublimation condensation freezing melting
The answers are…
You are heating water on the stove and you see steam.
evaporation
2. You see a smoky substance coming off of dry ice.
sublimation
3. You notice your iced tea glass is wet on the outside.
condensation
4. You leave a case of water in the car, but the temperature dropped below zero that night.
freezing
5. You forget the ice cream in the trunk,
and it’s 90 degrees out
melting