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Chemistry > Chemical Changes > Flashcards

Chemical Changes Flashcards

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1
Q

What is acidic

A

pH 1-6

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2
Q

What is neutral

A

pH7

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3
Q

What is alkaline

A

pH8-14

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4
Q

How can you measure pH of a solution

A

Indicator dyes
Universal indicator paper
pH probe
pH meter

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5
Q

What is a base

A

Any compound that neutralises an acid

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6
Q

Types of acids

A

Hydrochloric
Nitric
Sulphuric

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7
Q

What does hydrochloric acid produce

A

A chloride

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8
Q

What does nitric acid produce

A

A nitrate

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9
Q

What does sulphuric acid produce

A

Sulphate

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10
Q

Reaction between base and acid

A

Acid + base -> salt + water

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11
Q

Ionic equation for neutralisation

A

H+ + OH- -> H2O

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12
Q

Reaction between metal oxide and bases

A

Acid + metal oxide -> metal salt + water

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13
Q

Reaction between metal carbonate and bases

A

Acid + metal carbonate -> salt + water + carbon dioxide

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14
Q

Reactivity series

A 
Potassium 
Sodium 
Lithium 
Calcium 
Magnesium 
CARBON
Zinc 
Iron
HYDROGEN
Copper
Silver 
Gold
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15
Q

What is a gain of oxygen

A

Oxcidation

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16
Q

What is a loss of oxygen

A

Reduction

17
Q

What ores need to be extracted by electrolysis

A 
Potassium
Sodium 
Lithium
Calcium 
Magnesium
18
Q

What ores can be extracted with carbon

A 
Zinc 
Iron 
Hydrogen 
Copper
Silver 
Gold
19
Q

What is a loss of electrons

A

Oxidation

20
Q

What is a gain of electrons

A

Reduction

21
Q

OILRIG =

A

Oxidation is Loss Reduction is Gain

22
Q

A more reactive metal will displace …….

A

A less reactive metal from its compound

23
Q

Cathode =

A

Negative electrode

24
Q

Anode=

A

Positive electrode

25
Q

What happens at the negative electrode

A

Positive ions are attracted

REDUCTION OCCURS HERE- gains electrons

26
Q

What happens at the positive electrode

A

Negative ions are attracted

OXIDATION OCCURS HERE- loss of electrons

27
Q

What do you use in half equations to balance

A

E- or E+

Chemistry (9 decks)

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