Misc.

Question 1

Aluminium is extracted from its ore by using a mixture of aluminium ore and cryolite. Explain why a mixture is used.

Answer 1

• A mixture is used to lower the melting point

Question 2

The final stage in a Life Cycle Assessment is consideration of how a product might be disposed of. One method is incineration. Suggest ONE advantage and ONE disadvantage of incineration as a method of disposal

Answer 2

• Can be used to generation electricity/cuts down on waste going to landfill but can release polluting gases into the atmosphere

Question 3

Concrete is a very strong material used for making buildings. Describe the structure of concrete

Answer 3

• Concrete is a composite
• consisting of aggregate/mixture of sand and gravel
• mixing with/embedded in cement
• allowed to dry

Question 4

Name a test for water

Answer 4

Anhydrous copper sulfate

Question 5

What is a mixture of metals called?

Answer 5

Alloy

Question 6

What is present in compounds but not between the constituents of a mixture?

Answer 6

Bonds

Question 7

Name the main two components in steel

Answer 7

Iron and Carbon

Question 8

What sort of reactions are needed to separate the elements of a compound

Answer 8

Chemical

Question 9

What can separate the colours in inks

Answer 9

Chromatography

Question 10

What is a way of separating mixtures because of their boiling points

Answer 10

Distillation

Question 11

What is the liquid that passes through the condenser and is collected during fractional distillation?

Answer 11

Distillate

Question 12

What is a chemically pure substance called?

Answer 12

Element

Question 13

What is a mixture designed for a special purpose called?

Answer 13

Formulation

Question 14

What are the main types of distillation called?

Answer 14

Simple distillation and fractional distillation