Metal reactions Flashcards
1
Q
metal + water –>
A
metal hydroxide + hydrogen
2
Q
metal + acid –>
A
salt + hydrogen
3
Q
give the reactivity series
A
** Please Stop Calling me a zebra, I hate counting silver gold **
potassium
sodium
calcium
magnesium
aluminium
zinc
iron
hydrogen
copper
Silver
gold
4
Q
what happens in a metal displacement reaction
A
a more reactive metal will displace a less reactive metal from its salts in a solution.
5
Q
what type of reaction is a displacement reaction
A
exothermic
6
Q
what does OIL RIG stand for
A
oxidation is loss, reduction is gain
7
Q
why are some metals more reactive than other metals
A
because they lose electrons more easily to form cations
8
Q
what are the 3 exceptions to the reactivity series
A
- aluminium has a layer of aluminium oxide that stops it from reacting with water
- in a reaction of calcium with dilute sulfuric acid, a layer of insoluble calcium sulfate forms slowing the reaction down
- in a reaction of magnesium and water a layer of sparingly soluble magnesium hydroxide forms and slows the reaction
