1. Materials and their properties.

2. What are materials?
A material is a physical substance used to make things. Metals, plastics, ceramics, glass and fibres are some of the main categories for materials. If we look around, everything we see is made from a material, sometimes more than one ....

3. Can you see any other examples around you?
For example:
The clothes you are wearing are made from fibres.
The chair you are sitting on is made from plastic.
The windows in the school are made from glass.
Can you see any other examples around you?

4. Properties of materials
A property of a material is a description of the characteristics which it has. They are adjectives which tell us about the material.
Materials have different properties and characteristics depending on what they are used for.
Some materials are hard, others are soft. Some are strong, others are weak.

5. List of properties
Here is a list of the properties which describe different materials:
Shiny – It reflects light
Strong – It won’t break easily
Flexible – It can be bent easily without breaking
Light - It doesn’t weigh much
Heavy – It weighs a lot
Coloured – Has colour
Magnetic – It’s attracted to magnets
Bendy - Flexible

6. Hard – Something which can’t be bent easily
Brittle – It’s hard but will break easily
Malleable – It can be shaped easily
Magnetic – It’s attracted to magnets
Bendy – Flexible
Transparent – Something you can see through
Translucent – Something you can partially see through
Opaque – Something you can not see through
Conductor – It allows heat or electricity to pass through
Insulator – It doesn’t allow heat or electricity to pass through.

7. Which of the previous words could you use to describe:
A) a pencil...
Hard, light, opaque
B) A window
Transparent or translucent, hard, brittle
C) A piece of paper...
Light, opaque, malleable
D) A fork...
Shiny, hard, magnetic, opaque, conductor

8. Materials can be categorised into groups. One of the main groups is...
Shiny
Strong
Good conductors of heat and electricity
METALS
Some are magnetic
Usually opaque
E,g aluminium, copper, iron, lead...

9. These properties make metals suitable for many things...
Tools
Bridges
Coins
Knives, forks and spoons
Can you think of any other uses of metals?

10. Uses and properties..
Q) Why is copper suitable for electrical wiring? What properties must it have?
- Good conductor
of electricity
- It is strong.

11. Why are saucepans made from metal
Why are saucepans made from metal? Which properties make it suitable for the use?
- It is a good conductor or heat.
- It is It does not melt with high temperatures.
- It is strong