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Chemistry > The Reactivity Series > Flashcards

The Reactivity Series Flashcards

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1
Q

What is 20 % of air

A

Oxygen

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2
Q

Metal = Mg - magnesium
Does it react with oxygen
Observation

A

Does it react

Yes

Observation

Grey solid
Burns with a bright white light
White Ash forms

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3
Q

Metal = Fe - iron
Does it react with oxygen
Observations

A

Does it react

Yes

Observation

Grey solid burns with orange sparks
Black solid forms

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4
Q

Metal = Cu - copper
Does it react with oxygen
Observation

A

Does not react

Yes

Observation
Red-brown solid at start and glows red when burning
Black layer forms

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5
Q

Metal = Zn - zinc
Does it react with oxygen
Observation

A

Does it react

Yes

Observation
Grey solid at start
And yellow solid forms
Which turns white on
Cooling

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6
Q

Metal = Ca - calcium
with oxygen
Does it react
Observation

A

Does it react

Yes

Observation
Grey solid
Burns with a brick red flame
And white solid forms

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7
Q

Word equation for metal and oxygen

A

Metal + oxygen—— metal oxide

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8
Q

Reaction of metal with water
Metal = Na - sodium
Observation

A

Gives a gas
Floats
Moves around the surface of water
Melts and forms a ball
Disappears and a colourless solution forms

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9
Q

Reaction of metal with water
Metal = k - potassium
Observation

A

Gives a gas
Floats
Moves around the surface of water
Melts and forms a ball
Disappears and a colourless solution form
Burns with lilac flame
Popping sound at end

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10
Q

Which metal reacts fastest

A

Potassium

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11
Q

What colour was a universal indicator in the resulting solutions

A

Dark green/ blue (allcali)

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12
Q

What was the PH of the solutions after Na & K reacted

A

12 - 14

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13
Q

Why are these metals stored in oil

A

To prevent a reaction with moisture and oxygen in the air

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14
Q

Note : Na + K are easily cut ( soft-metals ) and are lustrous when freshly cut, but they tarnish rapidly in air

A
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15
Q

What are the observations for Ca with cold water

A

Ca sinks and rises
Bubble of gas
Ca dissappears + cloudy solution forms
Test tube warmers up

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16
Q

Look at the diagram in note book

A
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17
Q

General equation for metal and water

A

Metal + water&raquo_space; metal Hydroxid + Hydrogen
(Na,K,Ca)

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18
Q

Method for magnesium with steam

A

Heat the Mg until it is red hot and then heat the damp mineral wool to convert water into steam

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19
Q

Result for magnesium and steam

A

Mg burns with a bright white light
White Ash forms

20
Q

Look at the diagram on MAGNESIUM AND STEAM

A
21
Q

General equation for metal and water

A

Metal + water&raquo_space; metal oxide + hydrogen

22
Q

Note : Copper does not react with water or steam

A
23
Q

Reactions of metals with acids
Mg
Magnesium
is hydrogen produced

A

Metal : Mg

Observation: bubble of gas, test tube warms up
Solid dissappears
Colourless solution forms

Is hydrogen produced
Yes

Reactivity scale
One

24
Q

Reaction of metal with water
Zn
Observation
is hydrogen produced

A

Observation

Bubble of gas
Test tube warms up

Is hydrogen produced
Yes

Reactivity
2

25
Q

Reaction of metals with acids
Metal: Cu
Observation

A

Observation

No reaction

Is hydrogen produced
No

Reactivity scale
=4

26
Q

Reactions of metals with acids
Metal: Fe
Observation

A

Observation
Bubbles of gas

Is hydrogen produced
Yes

Reactivity scale
3

27
Q

Reaction of metals with water
Metal : Al
Observation
Is hydrogen produced

A

Observation
No reaction

Is hydrogen produced
No

Reactivity scale
=4

28
Q

Note : sodium and potassium are too reactive to add to acids
Dangerous reaction

A
29
Q

Aluminium doesn’t react with the acid why

A

Aluminium is permanently coated with a protective layer of aluminium oxide, so it doesn’t show true reactivity.

30
Q

General equation for metal and acid

A

Metal + acid&raquo_space; salt + hydrogen
E.g
Magnesium + hydrogenchloric acid&raquo_space; Magnesium chloride + hydrogen

31
Q

Does Mg, Zn, Fe , Cu
React with magnesium sulfate

A

Mg = no
Zn = no
Fe = no
Cu = no

32
Q

Does Mg, Zn, Fe , Cu
React with zinc sulfate

A

Mg .. yes
Zn… no
Fe …. no
Cu ……no

33
Q

Does Mg, Zn, Fe , Cu
React with iron sulfate

A

Mg …yes
Zn ….yes
Fe…..no
Cu ….no

34
Q

Does Mg, Zn, Fe , Cu
React with copper sulfate

A

Mg ….yes
Zn …. yes
Fe….yes
Cu…. no

35
Q

What does a more reactive do to less reactive metal

A

A more reactive metal will displace a less reactive metal from its compound

36
Q

Word equation for magnesium and copper sulfate

A

Magnesium + copper sulfate&raquo_space;> copper + Magnesium sulfate

37
Q

Elements in most reactive to less reactive order

A

Potassium ——— poor
Sodium ——– sciencist
Calcium ————– can
Magnesium ———– make
Aluminium ————- a
Zinc ———————zoo
Iron ——————in
Copper ——————China

38
Q

Reaction when heated in air/oxygen

What elements burn in air to make metal oxide

A

The first 5
Potassium
Sodium
Calcium
Magnesium
Aluminium

39
Q

Reaction when heated in air / oxygen

Metal oxides form slowly

A

That Last 3
Zinc
Iron
Copper

40
Q

Reaction with water

React with ( cold ) water to form metal hydroxides ( solution + hydrogen)

A

The first 3

Potassium
Sodium
Calcium

41
Q

Reaction with water

React slowly with water -reacts with steam

A

Magnesium
Aluminium

42
Q

Reaction with water

React with steam to form metal oxide (solids + hydrogen)

A

Aluminium
Zinc
Iron

43
Q

Reaction with water

Does not react

A

Copper

44
Q

Reaction with acids

Reaction dangerously fast

A

Potassium
Sodium
Calcium

45
Q

Reaction with acids

Reacts with acid to form a salt + hydrogen

A

Magnesium
Aluminium
Zinc
Iron

46
Q

Reaction with acid

Does not react

A

Copper

47
Q

Look at the Reactivity series diagram

A

Chemistry (4 decks)

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