S4.8.2 Glossary

Question 1

Biofuel

Answer 1

A fuel made from plants

Question 2

Anode

Answer 2

The positive electrode used in electrolysis

Question 3

Bioleaching

Answer 3

Extracting metals from a solution, using bacteria

Question 4

Cathode

Answer 4

The negative electrode used in electrolysis

Question 5

Compound

Answer 5

Two or more different elements chemically bonded together.

Question 6

Conduction

Answer 6

The transfer of energy from one vibrating particle to the next

Question 7

Convection

Answer 7

Hotter particles move from hot to cool areas. Cooler particles are drawn in and heated, creating a convection current.

Question 8

Displacement

Answer 8

A reaction where a more reactive element takes the place of a less reactive element in a compound.

Question 9

Dissipate

Answer 9

Spread out

Question 10

Electrolysis

Answer 10

The splitting of a compound using electricity

Question 11

Energy efficiency

Answer 11

Proportion of energy transferred usefully compared to supplied

Question 12

Finite

Answer 12

Something which will run out, is in limited supply

Question 13

Insulation

Answer 13

Material which reduces heat loss

Question 14

Leachate

Answer 14

A solution containing dissolved solids

Question 15

Life cycle assessment

Answer 15

Assesses the environmental impact of a product or event

Question 16

Lubricant

Answer 16

Substance which reduces friction between moving parts

Question 17

Metal ore

Answer 17

A rock which contains a metal compound, which can be extracted

Question 18

Non-renewable

Answer 18

A resource which cannot be replenished and will run out

Question 19

Ore

Answer 19

Rocks containing metal compounds that can be extracted.

Question 20

Oxidation

Answer 20

The loss of electrons, or gaining oxygen

Question 21

Phytomining

Answer 21

Extracting metals from soil using plants

Question 22

Radiation

Answer 22

The transfer of energy through waves.

Question 23

Recycling

Answer 23

Converting waste into reusable material

Question 24

Redox

Answer 24

A reaction where reduction and oxidation occur at the same time.

Question 25

Reduction

Answer 25

Gaining electrons, or losing oxygen

Question 26

Renewable

Answer 26

A resource which cannot be replenished and will run out

Question 27

Sustainability

Answer 27

Meeting the needs of current generations, whilst still having enough resources for future generations to meet their needs.