The Reactivity Series

Question 1

The reactivity if metals can be deduced by…

Answer 1

Using displacement reactions, in which a less reactive metal is pushed out of its compound by a more reactive metal

Question 2

Mg + CuO = MgO + Cu is a … Reaction

Answer 2

Displacement

Question 3

Displacement reactions are also … Reactions

Answer 3

Redox

Question 4

What happens on redox reactions

Answer 4

Oxidation and reduction happen in the same reaction

Question 5

The reducing agent is…

Answer 5

A substance that reduces something else

Question 6

An oxidising agent is…

Answer 6

Something that oxidises something else

Question 7

Acronym for redox?

Answer 7

OILRIG (oxidation is loss, reduction is gain)
Leo Says Ger
Olé

Question 8

Acronym for reactivity series

Answer 8

Police
Sergeant 
Lord
Charlie
MA (Carbon) ZITL
(Hydrogen)
Caught
Me
Stealing
Gold
Plate

Question 9

Spectator ions aren’t included in…

Answer 9

Ionic equations

Question 10

What are the ionic and half equations of

Mg + Cu(2+) + O(2-) = Mg(2+) + O(2-) + Cu

Answer 10

Ionic - Mg + Cu(2+) = Mg(2+) + Cu

Half:
Mg = Mg(2+) + 2e-
Cu(2+) + 2e- = Cu

Question 11

Potassium, Sodium and Lithoum react with water…

Answer 11

Very vigorously, producing hydroxides and hydrogen gas

Question 12

Potassium, Sodium and Lithoum react with dilute acids…

Answer 12

So vigorously that they are too reactive to be added safely

Question 13

Calcium reacts with water…

Answer 13

Well and produces calcium hydroxide and hydrogen

Question 14

Calcium reacts with dilute acids…

Answer 14

Violently but safely enough if the acid is dilute enough

Question 15

Magnesium reacts with water…

Answer 15

It reacts with steam to produce magnesium hydroxide and hydrogen

Question 16

Magnesium reacts with dilute acids…

Answer 16

Vigorously, and strongly exothermically to produce a salt and hydrogen

Question 17

Zing or Iron react with water…

Answer 17

Slowly, forming a hydroxide and hydrogen

Question 18

Zinc or Iron react with dilute acids…

Answer 18

Slowly

Question 19

Anything below iron reacts with water or dilute acids…

Answer 19

Not at all

Question 20

For iron to rust two things are needed

Answer 20

Water and Oxygen

Question 21

You can prevent the rusting of iron by…

Answer 21

Using Barriers
Alloying the iron
Galvanising the iron
Using sacrificial anodes

Question 22

How do you alloy iron to stop it rusting?

Answer 22

Alloy it with chromium or nickel to produce stainless steel

Question 23

Galvanise iron by…

Answer 23

Costing it with a layer of zinc, which is more reactive than iron and will corrode instead

Question 24

During the process of sacrificial protection with zinc and iron…

Answer 24

Zinc corrodes, losing electrons to form ions. These electrons flow into the iron so any iron atom which has lost ions immediately regains them, so even if the zinc is scratched, the iron won’t rust

Question 25

Sacrificial anodes can also help iron that has already rusted, as…

Answer 25

The iron can still be displaced by the more reactive zinc

Question 26

Equation for iron oxide reacting with zinc

Answer 26

Fe2O3 + 3Zn = 2Fe + 3ZnO