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Chemistry Paper 1 > Chemical Changes and Electrolysis > Flashcards

Chemical Changes and Electrolysis Flashcards

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1
Q

Metals react with oxygen to produce …

A

Metal oxides

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2
Q

Oxidation reactions means metals gain …

A

Oxygen

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3
Q

Oxidation reactions means electrons are …

A

Lost

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4
Q

Reduction reactions means metals lose …

A

Oxygen

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5
Q

Reduction reactions means electrons are …

A

Gained

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6
Q

Order the reactivity series

A

Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium
Carbon
Zinc
Iron
Hydrogen
Copper
Silver
Gold

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7
Q

Metals less reactive than —— can be extracted from their oxides by ——— with carbon

A

Carbon
Reduction

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8
Q

If magnesium was added to copper sulphate solution, what metal would be oxidised

A

Magnesium

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9
Q

What is a redox reaction?

A

A reaction where both oxidation and reduction occur

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10
Q

What type of reaction is a displacement reaction?

A

Redox reaction

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11
Q

Metal + Acid —>

A

Salt + Hydrogen

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12
Q

Acid + Alkali —>

A

Salt + Water

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13
Q

Hydrochloric acid will produce
Nitric acid will produce
Sulfuric acid will produce

A

Chlorides
Nitrates
Sulfates

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13
Q

What ions do acids produce?

A

Hydrogen (H+)

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14
Q

Hydrogen ions + Hydroxide ions —>
H+ + OH- —>

A

Water
H2O

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15
Q

Titration is the process of …

A

Determining the concentration of an unknown solution

16
Q

A strong acid is completely ——- in aqueous solutions

A

Ionised

17
Q

A weak acid is only ——— ionised in aqueous solutions

A

Partially

18
Q

When an ionic compound is melted or dissolved in water, the ions are …
These solutions are able to conduct electricity and are called …

A

Free to move about within the liquid or solution

Electrolytes

19
Q

When you pass a current through electrolytes, the —- move to the ———-

A

Ions
Cathodes

20
Q

Positive ions move to the …

A

Cathode

21
Q

Negative ions move to the …

A

Anode

22
Q

Electrolysis is using electricity to …

A

Break down electrolytes to form elements

23
Q

At the cathode, positive ions —- electrons

A

Gain

24
Q

At the anode, negative ions —- electrons

A

Lose

25
Q

An electrode is typically made of …

A

Graphite

26
Q

At the cathode - if the metal is more reactive than hydrogen - what is produced?

A

Hydrogen

27
Q

What is produced at the anode?

A

Oxygen

Chemistry Paper 1 (6 decks)

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