This document discusses states of matter and changes in matter caused by temperature. It defines matter as anything that occupies space and has mass, and identifies three common states of matter: solid, liquid, and gas. The document then describes an activity where students will observe how solids like candle wax and crayons melt when heated, changing from solid to liquid, and how they solidify again when cooled by changing back from liquid to solid. Students are provided exercises to test their understanding of these changes in states of matter caused by temperature.

2. Describing Changes in
Matter:

3. What is Matter?
Matter is anything that occupies
space and has mass.

4. States of Matter:
solid
gas
liquid

5. DRILL

12. 1.Describe changes in materials
based on the effect of temperature.
Objective: At the end of the lesson, the pupils
will be able to
2.Investigate how the matter changes.

16. T – talk in less noise
A – attitude in group
S – share ideas and feelings
K – keep with your group
Group Activity Rule:

17. RUBRIC:
P – performance – 5 points
A – accuracy - 5 points
S – speed - 5 points
S – standards - 5 points

18. Output Presentation/
Reporting

19. DISCUSSION

21. Generalization
a. Heat causes a change in the appearance of
the material. Initially, the candle wax is solid in
form, but when heat is added, it melts. The
process is called melting.
b. However, when heat is removed, or when the
material is cooled, the melted candle and
crayons become solid again. It changes from
liquid to solid. The process is called freezing.

22. Exercises

23. Exercises:
What happens to the solid like candle wax,
crayons and chocolate when heated?
a. They melt.
b. They solidify.
c. They evaporate.
a. They melt.

24. Exercises:
What happens to the solid like candle wax, crayons and
chocolate when removed from the heat?
a. They melt.
b. They solidify.
c. They evaporate.
b. They solidify.

25. Exercises:
What makes those materials melt?
a. ice
b. stone
c. heat
a. heat

26. Exercises:
What do you call the process of
changing solid to liquid?
a. melting
b. freezing
c. evaporation
a. melting

27. Exercises:
What do you call the process of
changing liquid to solid?
a. melting
b. freezing
c. evaporation
a. freezing

29. Assignment
Bring 2 pcs. Naphthalene Ball

30. Thank you!!!