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Chemistry GCSE > GCSE Chemistry C2 - Section 5 Acids, Bases and Salts > Flashcards

GCSE Chemistry C2 - Section 5 Acids, Bases and Salts Flashcards

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1
Q

3 things that sodium hydroxide from the electrolysis of brine is used to make are . .

A

bleach, paper and soap

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2
Q

Acid + base =

A

a salt + water

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2
Q

Negative ions are . . . . . At the electrodes

A

oxidised

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3
Q

This method breaks down a substance using electricity

A

electrolysis

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4
Q

An alkali is a . . .

A

soluble base

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5
Q

The metal to be used to electroplate an object is made into the . . . . electrode

A

positive

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6
Q

We measure how acidic or alkaline a substance is by measuring its . .

A

pH

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7
Q

An insoluble precipitate can be collected by . . .

A

filtration

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7
Q

This method can be used to remove some metal compounds from waste water

A

precipitation

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8
Q

Reduction is . . .

A

gaining electrons

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9
Q

Chlorine from the electrolysis of brine can be used to make . .

A

bleach and new plastics

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10
Q

soluble salts can be crystallised out of solution by . . .

A

evaporating the solvent

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11
Q

The negative electrode is called the . . .

A

cathode

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12
Q

An insoluble precipitate can be collected by . . .

A

filtration

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13
Q

Insoluble salts can be made by reacting 2 solutions to produce a . . .

A

precipitate

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14
Q

acid + metal =

A

a salt + hydrogen

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14
Q

All acids produce this ion in water

A

H+

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15
Q

Oxidation is . . .

A

loss of electrons

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16
Q

An indicator is a substance that . . .

A

changes colour at different pH values

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16
Q

Negative ions are called

A

anions

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16
Q

Positive ions in electrolysis move towards the . . .

A

cathode (negative electrode)

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17
Q

Positive ions are called

A

cations

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18
Q

The metal to be used to electroplate an object is made into the . . . . electrode

A

positive

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19
Q

Chlorine from the electrolysis of brine can be used to make . .

A

bleach and new plastics

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20
Q

A base is a substance that will . . .

A

neutralise an acid

21
Q

Insoluble salts can be made by reacting 2 solutions to produce a . . .

A

precipitate

21
Q

The object to be elctroplated is made into the . . . . .electrode

A

negative

22
Q

soluble salts can be crystallised out of solution by . . .

A

evaporating the solvent

22
Q

The positiveelectrodes in aluminium extraction must be replaced periodically because . . .

A

They are made of carbon and burn away when the oxygen is produced in electrolysis

24
Q

Positive ions in electrolysis move towards the . . .

A

cathode (negative electrode)

25
Q

Negative ions are called

A

anions

25
Q

3 advantages of electroplating are . .

A

it improves the appearance of objects, it protects objects from corrosion and it uses smaller amounts of precious metals

26
Q

This method can be used to remove some metal compounds from waste water

A

precipitation

26
Q

The negative electrode is called the . . .

A

cathode

28
Q

The object to be elctroplated is made into the . . . . .electrode

A

negative

29
Q

All acids produce this ion in water

A

H+

31
Q

A base is a substance that will . . .

A

neutralise an acid

32
Q

Negative ions are . . . . . At the electrodes

A

oxidised

34
Q

The positiveelectrodes in aluminium extraction must be replaced periodically because . . .

A

They are made of carbon and burn away when the oxygen is produced in electrolysis

34
Q

The 3 products obtained in the electrolysis of brine are . . .

A

chlorine gas, hydrogen gas and sodium hydroxide solution

35
Q

Positive ions are called

A

cations

37
Q

3 things that sodium hydroxide from the electrolysis of brine is used to make are . .

A

bleach, paper and soap

38
Q

Reduction is . . .

A

gaining electrons

39
Q

Oxidation is . . .

A

loss of electrons

40
Q

We measure how acidic or alkaline a substance is by measuring its . .

A

pH

42
Q

Negative ions in electrolysis move towards the . . .

A

anode (positive electrode)

44
Q

Positive ions are . . . . At the electrodes

A

reduced

46
Q

3 advantages of electroplating are . .

A

it improves the appearance of objects, it protects objects from corrosion and it uses smaller amounts of precious metals

47
Q

Positive ions are . . . . At the electrodes

A

reduced

48
Q

Negative ions in electrolysis move towards the . . .

A

anode (positive electrode)

50
Q

The positive electrode is called the . .

A

anode

51
Q

The 3 products obtained in the electrolysis of brine are . . .

A

chlorine gas, hydrogen gas and sodium hydroxide solution

53
Q

Alkalis produce this ion in water

A

-OH

54
Q

An alkali is a . . .

A

soluble base

55
Q

This method breaks down a substance using electricity

A

electrolysis

56
Q

An indicator is a substance that . . .

A

changes colour at different pH values

57
Q

Alkalis produce this ion in water

A

-OH

58
Q

acid + metal =

A

a salt + hydrogen

59
Q

The positive electrode is called the . .

A

anode

60
Q

Acid + base =

A

a salt + water

Chemistry GCSE (9 decks)

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