C.M Chem

Question 1

Composite materials

Answer 1

Combination of two or more materials some properties of each

Question 2

How are many composite materials made

Answer 2

By mixing fibres into a liquid resin which then sets hard

Question 3

Different …..

Answer 3

Types of fibre and different types of resin create different composite materials with different properties and uses

Question 4

Concrete

Answer 4

It is a composite material

Question 5

What is concrete made off

Answer 5

Mixture of cement aggregate (crushed rock) and water

Question 6

How is cement formed explanation

Answer 6

Cement and water form a material that can be moulded into shapes and then set hard.

Aggregate is added to give concrete its strength

Sometimes rods are added to make it even stronger

Question 7

Cement lolllllazoooooo

Answer 7

Mainly calcium oxide (lime) made by roasting calcium carbonate (limestone)
Breaks in a thermal composition 
CaCO3 -> CaO -> CO2
Calcium.            Calcium      Carbon
Carbonate -->   oxide  -->  Dioxide