3. Questions & Answers
1) What happened to the ice cube?
Ice cube melted.
2)What caused the change to the ice cube?
Heat energy from the Sun.
3)How many states of matter did you see? What are they?
3 states. Solid, liquid and gas.
4)What is gained by the ice cube during the change?
Heat energy is gained by the ice cube.
5. What can we conclude?
•Heat causes change in state of matter.
Do you think all objects change in state of
matter just like the ice cube at low
temperature?
What happens when objects do not change
in state of matter?
6. From the class activity…
• Do you think all objects change in state
of matter just like the ice cube?
No.
• What happens when objects do not
change in state of matter?
Expand when object gains heat or
contract when object looses heat.
7. Conclusion
• Heat causes…
1. change in state of matter
(Solid – Liquid – Gas) when heat gained.
(Gas – Liquid – Solid) when heat lost.
2. expansion when heat is gained or
contraction when heat is lost.
