This document discusses physical properties and phase changes of matter. Physical properties include mass, volume, solubility, miscibility, hardness, malleability, melting point, boiling point, conductivity, ductility, and brittleness. Properties like color, taste, odor are intensive as they do not depend on amount, while properties like weight, mass, volume are extensive as they vary with amount. Phase changes include melting (solid to liquid), freezing (liquid to solid), sublimation (solid to gas), evaporation (liquid to gas), condensation (gas to liquid), and deposition (gas to solid).

1. PHASE
CHANGE

2. Physical properties are
characteristics which we described
matter, and which can be
determined without changing its
identity.

3. Mass is the amount of matter. It is
expressed in grams or in kilograms.
Volume is the space occupied by
matter. It may be expressed in
milliliters or liters.
Solubility is the ability of a solid to
dissolved in a liquid.

4. Miscibility is the ability of liquid to
dissolved in another liquid.
Hardness is the property of a solid to
resist compression or scratching.
Malleability is the ability of a metal to
flattened into sheets.

6. Melting point is the temperature at
which a substance a substance begins
to change from solid to liquid.
Boiling point is the temperature at
which a substance a substance begins
to bubble up and change from liquid to
gas.

7. Conductivity is the ability of some
material to conduct heat or electricity.
Ductility is the ability of some
materials to be drawn into wires.
Brittleness is the property of some
materials that makes them easily break.

9. Physical properties which vary with a
change in quantity or which depend on
amount are called extensive
properties.
Those which do not vary or do not
depend on the amount are called
intensive properties..

10. INTENSIVE
PROPERTIES
EXTENSIVE
PROPERTIES
Color Weight
Taste Mass
Odor Volume
Hardness Length
Density Width
Specific Gravity Thickness
Boiling Point Area
Freezing Point Height

11. The current state of matter
changes into another state, and
still retaining its original
composition, only the state of
the substance is change but its
chemical composition is retained
is called phase change.

12. Melting - solid changes
to liquid.
Example: Ice melts
Freezing - liquid turns
to solid.
Example: Animal oil
solidifies when cooled.

13. Sublimation - solid to
gas.
Example: Dry ice
Evaporation - liquid
turns to gas.
Example: Steam

14. Condensation - gas to
liquid.
Example: Rain
Deposition - gas turns
to solid.
Example: Steam of Ice

15. increasing
increasing
decreasing
decreasing
decreasing
fast
fast
slow
slow
slow
far
far
Very close
close
Very close