5- Displacement Reactions Flashcards
1
Q
what is a displacement reaction?
A
a displacement reaction is when metals displace less reactive metals in a compound
2
Q
what is produced in a reaction between magnesium and copper sulphate?
A
the solution turns colourless and a pinkish-brown solid is formed
3
Q
what colour is copper sulphate?
A
blue
4
Q
what colour is copper?
A
pinkish-brown
5
Q
what colour is silver?
A
a light grey
6
Q
which is darker; zinc or magnesium?
A
zinc is darker than magnesium
7
Q
what can be used to repair a railway line?
A
a thermite reaction (displacement)
8
Q
what is special about the thermite reaction?
A
it s extremely exothermic, and therefore molten iron is produced
