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Chemistry > The Reactivity Series > Flashcards

The Reactivity Series Flashcards

1
Q

The reactivity if metals can be deduced by…

A

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

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2
Q

Mg + CuO = MgO + Cu is a … Reaction

A

Displacement

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3
Q

Displacement reactions are also … Reactions

A

Redox

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4
Q

What happens on redox reactions

A

Oxidation and reduction happen in the same reaction

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5
Q

The reducing agent is…

A

A substance that reduces something else

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6
Q

An oxidising agent is…

A

Something that oxidises something else

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7
Q

Acronym for redox?

A

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

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8
Q

Acronym for reactivity series

A 
Police
Sergeant 
Lord
Charlie
MA (Carbon) ZITL
(Hydrogen)
Caught
Me
Stealing
Gold
Plate
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9
Q

Spectator ions aren’t included in…

A

Ionic equations

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10
Q

What are the ionic and half equations of

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

A

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

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

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11
Q

Potassium, Sodium and Lithoum react with water…

A

Very vigorously, producing hydroxides and hydrogen gas

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12
Q

Potassium, Sodium and Lithoum react with dilute acids…

A

So vigorously that they are too reactive to be added safely

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13
Q

Calcium reacts with water…

A

Well and produces calcium hydroxide and hydrogen

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14
Q

Calcium reacts with dilute acids…

A

Violently but safely enough if the acid is dilute enough

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15
Q

Magnesium reacts with water…

A

It reacts with steam to produce magnesium hydroxide and hydrogen

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16
Q

Magnesium reacts with dilute acids…

A

Vigorously, and strongly exothermically to produce a salt and hydrogen

17
Q

Zing or Iron react with water…

A

Slowly, forming a hydroxide and hydrogen

18
Q

Zinc or Iron react with dilute acids…

A

Slowly

19
Q

Anything below iron reacts with water or dilute acids…

A

Not at all

20
Q

For iron to rust two things are needed

A

Water and Oxygen

21
Q

You can prevent the rusting of iron by…

A

Using Barriers
Alloying the iron
Galvanising the iron
Using sacrificial anodes

22
Q

How do you alloy iron to stop it rusting?

A

Alloy it with chromium or nickel to produce stainless steel

23
Q

Galvanise iron by…

A

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

24
Q

During the process of sacrificial protection with zinc and iron…

A

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

25
Q

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

A

The iron can still be displaced by the more reactive zinc

26
Q

Equation for iron oxide reacting with zinc

A

Fe2O3 + 3Zn = 2Fe + 3ZnO

Chemistry (18 decks)

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