Yr11

Question 1

What is the reactivity series

Answer 1

Potassium
Sodium
Calcium
Magnesium
Aluminum
Zinc
Iron
Copper
Silver
Gold

Question 2

Pippa and Julie =

Answer 2

George

Question 3

What does a acid + metal equal

Answer 3

Salt + hydrogen

Question 4

What is electrolysis

Answer 4

Use this technique to extract metals above carbon on the reactivity series, this method requires a lot of heat and electricity so costs a lot of money.

Question 5

What is extracting copper

Answer 5

Phytomining
Bioleaching

Question 6

What is phytomining

Answer 6

-Grow plants that are contaminated with copper ions
- plants then burnt to ash (burns food source and co2 produced
-then use displacement to extract the copper

Question 7

What is bioleaching

Answer 7

-bacteria feed on sources containing copper ions
-produce leachate (solution containing copper ions
-extract copper with displacement

Question 8

Problems with waste disposal

Answer 8

Takes up space
Not everything is biodegradable
Toxic gases can be released
Metals are being wasted

Question 9

Reasons for recycling metals

Answer 9

Reserves metal ores
Reduces the need for mining
Reduce the energy used
Reserves landscape

Question 10

Problems with recycling metals

Answer 10

Costs of transporting
Energy for transporting
Sorting

Question 11

What is oxidisation

Answer 11

Gaining of oxygen e.g Carbon of carbon dioxide
Loosing electrons

Question 12

What is reduction

Answer 12

Loosing oxygen e.g copper oxide to copper
Gaining electrons