3.3.4 - metal extraction Flashcards
what are the 2 ways of extracting metal?
- electrolysis
- carbon extraction
what do we use to extract metals more reactive than carbon
electrolysis
what do we use to extract metals less reactive than carbon
carbon extraction
for example of carbon extraction, how can copper be displaced from its ore (copper oxide)?
by heating with carbon
reduction definition (in terms of oxygen)
loss of oxygen
reducing agent definition (in terms of oxygen)
takes oxygen away from something else
oxidisation (in terms of oxygen)
gain of oxygen
oxidising agent (in terms of oxygen)
gives oxygen to something else
what type of reaction is carbon extraction
redox reaction
redox meaning (in terms of oxygen)
reduction and oxidation at the same time
what are ores
rocks containing specific metal compounds