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Chemistry Aqa GCSE > Reactivity Of Metals > Flashcards

Reactivity Of Metals Flashcards

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1
Q

Metals + oxygen

A

Produce metal oxides
Oxidation reaction

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2
Q

Reactivity of metal

A

Relates to its tendency to form positive ions
In order in reactivity series

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3
Q

Displacement

A

More reactive metal can displace a less reactive metal from a compound

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4
Q

Unreactive metals

A

Found in the earth as a metal

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5
Q

Reactive metals

A

Contained in an ore
Require chemical extraction
Metals less reactive than carbon can be extracted from their oxides by reduction with carbon

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6
Q

Reduction

A

Lose of oxygen
Gain of electrons

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7
Q

Oxidation

A

Loss of electrons
Gain of oxygen

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8
Q

Acids + metals

A

Salts + hydrogen

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9
Q

Neutralise

A

Acids + alkalis and bases
Water produced

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10
Q

Metal carbonates

A

Salts + water + carbon dioxide

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11
Q

Soluble salts

A

Made from acids reacting with solid insoluble substances
Solid added to acid until in excess when it can be filtered out
Salt solutions can be crystallised to produce solid salts

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12
Q

Acids

A

Produce H+ ions in aqueous solutions

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13
Q

Aqueous solutions of alkalis

A

OH- ions

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14
Q

pH scale

A

0= acide
7= neutral
14= alkaline
Universal indicator

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15
Q

Titration

A

Volumes of acid + alkali solutions measured
Can workout concentration of an unknown solution

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16
Q

Strong acid

A

Completely ionised in aqueous solution
Hydrochloric nitric sulfuric

17
Q

Weak acids

A

Only partially ionised in aqueous solution
Ethanoic citric carbonic

18
Q

pH

A

As pH decreases by 1 unit hydrogen ion concentration increases by a factor of 10

19
Q

Dissolved ionic compound

A

Ions are free to move
Conduct electricity
Electrolytes

20
Q

Electrolytes

A

Passing a current through it causes ions to move to electrodes

21
Q

Negative electrode

A

Cathode

22
Q

Positive electrode

A

Anode

23
Q

Simple ionic compound

A

Metal goes to cathode
Nonmetal goes to anode

24
Q

Electrolysis

A

Used if metal is too reactive to be extracted by reduction with carbon
Large amounts of energy used

25
Q

What’s produced at cathode

A

Hydrogen produced if the metal is more reactive than hydrogen

26
Q

What’s produced at the anode

A

Oxygen produced unless solution contained Hailie ions

27
Q

Half equations

A

Reactions at electrodes
Loss or gain of electrons

Chemistry Aqa GCSE (4 decks)

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