Section 2 - Pgs 34-36 Flashcards
Describe a test to deduce the reactivity series using dilute acids.
1) Drop a piece of each metal in some dilute acid.
2) The faster the metals and acid react (i.e. the faster bubbles are produced), the more reactive the metal.
3) Hydrogen can be tested for using a lit splint.
Describe a test to deduce the reactivity series using water.
1) Drop a piece of each metal in some water.
2) The more vigorous the reaction, the more reactive the metal.
3) Potassium, sodium, lithium and calcium react vigorously with water. Magnesium, zinc and iron don’t react much with cold water, but they will react with steam. Copper doesn’t react with water or steam.
What is the order of the reactivity series?
Potassium Sodium Lithium Calcium Magnesium Aluminium (Carbon) Zinc Iron Tin (Hydrogen) Copper Silver Gold
What is the reactivity series?
The order of several metals in order of their reactivity.
What can the reactivity series be used to work out?
Whether a certain metal will displace another metal from its oxide.
What does a metal’s reactivity tell us?
How strongly it reacts.
Why does a more reactive metal displace a less reactive one?
Because it bonds more strongly to the non-metal.
What happens when a less reactive metal is put into a solution of a more reactive metal salt?
There is no reaction.
Reactive Metal + Water ->
Reactive Metal + Water -> Metal Hydroxide + Hydrogen
Less Reactive Metal + Steam ->
Less Reactive Metal + Steam -> Metal Oxide + Hydrogen
What are copper sulphate, zinc chloride and sodium chloride examples of?
Metal salts
What can displacement reactions be used to work out?
The reactivity series.
How can displacement reactions be used to work out the reactivity series?
1) Drop a piece of a metal into salt solutions of every metal in the reactivity series.
2) If there is a reaction, that metal is more reactive than the one in the solution. If not, then it is less reactive than the one in the solution.
3) Repeat this with every metal to deduce the reactivity series.
4) This can also be done with metal oxides instead of metal salt solutions.
Give the 3 main ways in which the reactivity series can be deduced.
1) Reactions with acid.
2) Reactions with water.
3) Displacement reactions.
Does water react with water or steam?
No
