3. General Properties of Matter
-Mass:
Is the
quantity
the amount
of matter
in an
object. In
kilograms
and grams.
-Volume:
Is the
amount of
space in an
object. In
litres and
millitres
4. Specific Properties of Matter
Hardness Brittleness Elasticity Density
When the matter
is hard and it is
difficult to
scratch
When it
breaks
easily.
When it returns
to its original
shape after
stretching it
Is the
relationship
between the
mass and the
volume of a
body
5. Forces Everywhere
Change
Motion
Forces
Change
Shape
The forces can make objects
move
An object in movement can
incrase or decrease its speed
Can change the direction of movement
Plastic materials do not recover to their
original change.
Elastic materials can recover to his
original shape.
Brittle materials can break if we apply
force to them.
