Metals Flashcards
Which metals can be extracted using carbon?
( reduction) •zinc •iron •tin •copper
What is electrolysis ?
Electrolysis uses electricity to break down substances
Electricity breaks the substance into ions which move to a charged electrode
What is bioleaching ?
Bioleaching uses bacteria to extract copper from an ore
What is phytomining?
Phytomining is where plants are grown in soul with copper
The plants absorb the copper and when biting leave the copper behind
How can metals be extracted?
Some metals are found as ores - they can be mined extracted and purified
What are the properties of copper?
Good conductor of heat&electricity
Hard but malleable
Does not react with water
Why are some metals such as gold and silver found as the metal itself within the earth without the need for extraction ?
Extremely interactive
Can be found within the earth as the metal itself without the need for chemical extraction from an ore
What is an ore?
A rock with enough metal to make it worthwhile extracting the metal from
Some metals can be extracted from ores using carbon - how does this work?
If carbon is more reactive that the metal, it reacts with the oxygen to purify it
