Composites

Composites

1. Composites are combinations of two or more different materials

2. many composites materials contain fibres embedded in a matrix or resin

3. concrete is made by mixing cement with sand, aggregate and water

4. composite materials are useful because they combine the properties of all the materials they are made from

5. in safety glass layers of glass are combined with clear polymer

6. concrete is used for large structure because it is strong

7. Exothermic reactions- transfer energy to the surroundings so the temperature of the surrounding to rise

8. Endothermic reactions- transfer energy from the surroundings so the temperature of the surroundings fall