1. Which answer best describes a ceramic material?
A.
A metallic solid with low melting points that made from non carbon based compounds
B.
A non metallic solid with high melting points that are made from non carbon based compounds
C.
A soft material that can be moulded into different shapes easily,
D.
When one material is embedded in another. These often contain fragments which are surrounded by a binder material.
2.
2. Which answer best describes soda glass?
A.
It can be moulded when hot and can be brittle and thing. It is usually made by heating a mixture of limestone, sand and sodium carbonate until it melts.
B.
It is a soft material when dug up from the group and can be moulded into different shapes.
C.
They are very large molecules that are formed from many small molecules called monomers. Strong covalent bonds hold the chains together.
D.
They are non metallic solids with high melting points that are made from non carbon based compounds.
3.
3. Thermosetting polymers have which type of bonds between their polymer chains?
A.
Covalent bonds
B.
Ionic bonds
C.
Intermolecular forces
D.
A, B and C
E.
A and B Only
4.
4. Thermosoftening polymers are...
A.
Very strong, rigid and hard.
B.
Made of polymer chains with crosslinks between them. This means that it does not melt when they are heated.
C.
Made of individual tangled chains of polymers. There are weak forces between the chains which means these polymers are flexible and can be melted and then remoulded.
D.
Used for children's toys, drain pipes and water tanks.
5.
5. What is an alloy?
A.
An alloy is a mixture of two or more metals only.
B.
An alloy is a mixture of two or more metals, or a mixture of a metal and a non metal.
C.
An alloy is a mixture of a metal and a non metal only.
D.
An alloy is a mixture of two more non metals only.
6.
6. Pure gold is said to be 24 carat. A gold alloy is described as being 8 carat gold. Calculate the percentage of gold in the alloy.
A.
33%
B.
8%
C.
2.4%
D.
77%
7.
7. Which best describes corrosion?
A.
When a metal is gradually destroyed by reacting with substances in the environment. Corrosion only happens on the surface of metals.
B.
When a metal gets rusty, For example an iron gate.
C.
When a metal reacts with an acid it corrodes forming a salt and water.
D.
When magnesium reacts with water to form hydrogen gas and magnesium hydroxide. It happens more quickly if the surface area is larger.
8.
8. How could we prevent corrosion?
A.
We could create a barrier, such as adding a plastic coating or painting it.
B.
We could add oil or grease.
C.
We could electroplate it with an unreactive metal using electrolysis.
D.
All of the Above
E.
A and C only.
9.
9. What is meant by sustainable development?
A.
It Is an approach to development that takes into account the needs of the present society while not damaging the lives of future generations.
B.
It is an approach to development that realises the dangers of relying on non-renewable resources and has helped create laws stopping countries using coal, oil and gas.
C.
It is an approach to development that allows countries to create their own laws in order to combat climate change.
D.
It is the sustained development of a country in order it generate wealth.
10.
10. What is the name of the process of using plants to obtain metal ions from the soil?
A.
Bioleaching
B.
Phytomining
C.
Rotofarming
D.
Reverse osmosis
11.
11. What is the name of the process of using bacteria to remove metals from ore?
A.
Bioleaching
B.
Phytomining
C.
Rotofarming
D.
Reverse Osmosis
12.
12. How many stages are there in a life cycle assessment?
A.
1
B.
2
C.
3
D.
4
13.
13. What is potable water?
A.
Water that has been packaged up and is ready to drink.
B.
Water that has been specifically sourced from natural sources such as mountain springs or lakes.
C.
Another name for Mineral water.
D.
Water that's been treated or is naturally safe for humans to drink - it's essential for life.
14.
14. State a sterilising agent used in the treatment of fresh water.
A.
Chlorine gas
B.
Ozone
C.
Ultraviolet Light
D.
All of the above
E.
A and B Only.
15.
15.State two types of contaminants that may be present in agricultural waste water.
