Physical change involves altering the appearance, form, shape, or size of matter without changing its composition or transforming it into a new substance. Matter can change states between solid, liquid, and gas through various processes including melting, evaporation, condensation, solidification, and sublimation. These state changes are examples of physical changes and occur when matter gains or loses energy, causing the particles that make up the matter to move differently.

1. Physical
Change

3. Clay
Haircut
Water-ice

5. Physical change - is the change
in matter where its
appearance, form, shape, or
size may be altered but its
composition stays the same or
it does not change into a new
substance.

6. • Matter can change from one
state to another.
• A change in state is an
example of physical change.
• The water cycle is the
perfect example of matter
changing its states.

7. Matter can change or
transform from one state
to another through
melting, evaporation,
condensation,
solidification, and
sublimation.

8. Melting – what happens to a solid
when they are heated? When
particles in solid vibrates, they
gain more energy. This vibration
causes them to expand and break
away from their positions. This is
the condition when melting point is
reached.

10. Melting point – is the temperature
at which solids turn into liquids.
Different solids have different
melting points.
Melting – the process by which
solids change to liquids due to the
addition or absorption of heat.

11. Evaporation – particles liquids
gain more energy and move
around faster when heated.
This movement causes them to
expand. The liquid reaches this
state at its boiling point, or
the temperature at which the
liquid turns into gas.

13. 100 degrees celsius - is the boiling
point of the water.
Evaporation – is the process by
which a phase of matter changes
from liquid to gas or vapor.

14. Condensation – is the process when a
liquid forms from gas or vapor. Water
vapor condenses when moist air is
cooled below its dew point, or the
temperature at which moist air
becomes saturated and forms dew
when it comes in contact with the
ground.
Dew is a deposit of moisture on an
exposed surface. Cloud, fog, and mist
are produced by condensation.

16. Solidification – is also called as freezing.
• It is the process by which the state of
matter changes from liquid to solid.
• When the temperature is lower than 0
degree, water solidifies.

17. Freezing point – is the
temperature at which
liquids solidify.

18. Sublimation – is the change of
state of matter from solid to
gas without passing the liquid
state.
Mothballs

19. After sometimes, the
mothballs will become
smaller before completely
disappearing. The smell from
the mothballs indicates their
transformation into a gas
state.