C10-Using Resources KW

Question 1

Alloy

Answer 1

A metal compound made by combining two or more metals together. This process is carried out to give greater strength or resistance to corrosion.

Question 2

Borosilicate glass

Answer 2

Glass made from sand and boron trioxide. It melts at higher temperatures than soda-lime glass

Question 2

Bioleaching (H)

Answer 2

Bioleaching uses bacteria to produce leachate solutions that contain metal compounds (H)

Question 3

Composite

Answer 3

Most composites are made of two materials, a matrix or binder surrounding and binding together fibres or fragments of the other material, which is called the reinforcement

Question 4

Corrosion

Answer 4

Corrosion is the destruction of materials by chemical reactions with substances in the environment, e.g. rusting

Question 5

Desalination

Answer 5

The process of removing salt from seawater

Question 6

Electroplating

Answer 6

Electroplating is the process of coating a metal with a thin layer of another metal by electrolysis to improve the metal’s corrosion resistance

Question 7

Finite resources

Answer 7

A non-renewable resource that cannot be readily replaced by natural means at a quick enough pace to keep up with consumption

Question 8

Galvanise

Answer 8

A process used to protect against corrosion by coating the metal with a protective layer of zinc

Question 9

Life cycle assessment (LCA)

Answer 9

Life cycle assessments are carried out to assess the environmental impact of products in each of these stages: extracting and processing raw materials, manufacturing and packaging, use and operation during its lifetime, disposal at the end of its useful life

Question 9

Ground water

Answer 9

Water held underground in the soil and crevices in rock

Question 10

NPK fertilisers

Answer 10

Fertilisers which contain compounds of nitrogen, phosphorus and potassium. The fertilisers improve agricultural productivity

Question 11

Ore

Answer 11

A rock from which metal can be extracted

Question 12

Phytomining (H)

Answer 12

Phytomining uses plants to absorb metal compounds from the soil. The plants are harvested and then burned to produce ash that contains the metal compounds (H)

Question 13

Potable water

Answer 13

Water that is safe to drink

Question 14

Raw materials

Answer 14

The basic material from which a product is made

Question 15

Renewable resources

Answer 15

A natural resource which can be used repeatedly and will not run out due to being naturally replenished

Question 16

Sacrificial protection

Answer 16

The protection of iron or steel against corrosion by using a more reactive metal. Zinc is often used as a sacrificial metal

Question 17

Soda-lime glass:

Answer 17

Glass made by heating a mixture of sand, sodium carbonate and limestone

Question 18

Sustainable development

Answer 18

Development that meets the needs of current generations without compromising the ability of future generations to meet their own needs

Question 18

Sterilisation

Answer 18

The process used to remove bacteria or living microorganisms from something. Used during the treatment of water

Question 19

The Haber process

Answer 19

The process used to manufacture ammonia from hydrogen and nitrogen gas

Question 20

Thermosetting polymers

Answer 20

Polymers which do not melt when heated.

Question 21

Thermosoftening polymers

Answer 21

Polymers which melt when heated and can be remoulded into different shapes