AQA GCSE Chemistry Unit 1 3.1 Extracting metals
- Created by: revisieacocobean
- Created on: 13-05-16 17:53
View mindmap
- Ore
- Rock containing enough metal to make it economical to extract
- Ore is mined
- Opencast mining
- Undergound mining
- Ore may be concentrated
- (removal of waste rock)
- Metal extracted
- Unreactive metals e.g Gold, are found in the earth as the metal itself
- METALS LESS REACTIVE THAN CARBON-Extracted by reduction with Carbon in a blast furnace (smelting)
- For example with Metal Oxides the reducing agent (carbon) is added to displace the metal from its compound
- Oxidation- reaction with oxygen
- Reduction- removal of oxygen
- Expensive as a lot of energy is required
- METALS MORE REACTIVE THAN CARBON- electrolysis- the extraction of metals from molten compounds
- Electrolysis purifies copper after smelting
- NEW WAYS OF EXTRacTING COPPER
- Phytomining- Plants absorb metal compounds. The plants are burnt and their ash contains metal compounds
- Bioleching- Bacteria produces leachate solutions that contain metal compunds
- NEW WAYS OF EXTRacTING COPPER
- Electrolysis purifies copper after smelting
- We should recycle metals as extracting them uses limited resources and is expensive
- METALS MORE REACTIVE THAN CARBON- electrolysis- the extraction of metals from molten compounds
- More reactive than carbon metals cannot be extracted from their oxides as it is too expensive because
- -There are many stages in the process
- Heated until metal is melted
- Electrolysis
- Heated until metal is melted
- A lot of energy is required
- -There are many stages in the process
- For example with Metal Oxides the reducing agent (carbon) is added to displace the metal from its compound
- METALS MORE REACTIVE THAN CARBON- electrolysis- the extraction of metals from molten compounds
- Electrolysis purifies copper after smelting
- NEW WAYS OF EXTRacTING COPPER
- Phytomining- Plants absorb metal compounds. The plants are burnt and their ash contains metal compounds
- Bioleching- Bacteria produces leachate solutions that contain metal compunds
- NEW WAYS OF EXTRacTING COPPER
- Electrolysis purifies copper after smelting
Comments
No comments have yet been made