Obtaining and using metals Flashcards
Do unreactive metals form compounds with other elements?
No ya baqara
what type of reaction is it when separate a metal from its oxide?
Reduction reaction matey
Why cant metals like potassium be separated using reduction?
Because it is too reactive
what process do metals that are more reactive than carbon get separated by?
Electrolysis
Name 3 properties of metals?
They are strong and bendy and they are good conductors of electricity and they are keng
Why does corrosion happen?
Because the metal is being oxidised
What is an alloy?
It is when two or more metals are put together to make a more stable compound.
What does a shape memory alloy do?
It bends back to its shape, (remembers its shape)
Name four reasons why it is important to recycle?
- It uses less resources
- It uses less energy
- It uses less money
- It makes less rubbish
Why is it good that it uses less resources?
- Because there’s a finite a mount of metal in the earth
2. Recycling conserves resources
Why is it good that it uses less energy?
- Recycling metals like copper and aluminum uses a fraction of energy used in burning fossil fuels
Why is it good that it makes less rubbish?
- Cuts down on amount of rubbish that goes to landfill
2. Landfills take up space+ pollute surroundings
