Matter and materials

Power Point del tema 4 de 5º de Primaria ''Matter and materials''

2. Matter
We can find matter in air, rocks, human beings,
water, etc.
It is anythign that takes space and mass.
It has two main characteristics: mass and volume

3. Mass
It is the quantity of
matter a body has.
It is measured in
kilograms (kgs) and
grams (g).
We use a balance to
calculate it.

4. Volume
It is the amount of
space a body occupies.
It is measured in litres
(l) and in mililitres
(ml).
We use graded
containers like test
tubes or measuring
cups to calculate it.

5. Specific properties of matter
Hardness: matter is
hard when it is difficult
to scratch.
The picture on the right
shows Mohs’s hardness
scale. Being number the
diamond the hardest of
them all.

6. Specific properties of matter
Brittleness: something
is brittle when it breaks
easily.
E.g.: a wooden bar is
more brittle than a
metal bar.

7. Specific properties of matter
Elasticity: is the ability
of the materials to come
back to their original
shape after we apply a
force to it.
E.g.: the spring on the
right is an example of
elastic material.

8. Specific properties of matter
Density: it is the
relation between the
mass and the volume of
a body.
We use the formula on
the right to calculate the
density a body has.

9. Properties of materials
Conductivity of heat:
depending on how they
transmit heat materials
can be:
Insulators: they do not
transmit heat.
Conductors: they do
transmit heat.

10. Properties of materials
Transparency:
depending on how the
light passes through a
material can be:
Transparent: light can
pass through.
Opaque: light cannot
pass through.

11. Properties of materials
Impermeability: when
liquid cannot pass
through a material, we
say it is impermeable.
E.g.: wellington boots
are a good example of
impermeability.