GCSE Chemistry C2 - Section 5 Acids, Bases and Salts

Question 1

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

Answer 1

bleach, paper and soap

Question 2

Acid + base =

Answer 2

a salt + water

Question 2

Negative ions are . . . . . At the electrodes

Answer 2

oxidised

Question 3

This method breaks down a substance using electricity

Answer 3

electrolysis

Question 4

An alkali is a . . .

Answer 4

soluble base

Question 5

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

Answer 5

positive

Question 6

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

Answer 6

pH

Question 7

An insoluble precipitate can be collected by . . .

Answer 7

filtration

Question 7

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

Answer 7

precipitation

Question 8

Reduction is . . .

Answer 8

gaining electrons

Question 9

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

Answer 9

bleach and new plastics

Question 10

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

Answer 10

evaporating the solvent

Question 11

The negative electrode is called the . . .

Answer 11

cathode

Question 12

An insoluble precipitate can be collected by . . .

Answer 12

filtration

Question 13

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

Answer 13

precipitate

Question 14

acid + metal =

Answer 14

a salt + hydrogen

Question 14

All acids produce this ion in water

Answer 14

H+

Question 15

Oxidation is . . .

Answer 15

loss of electrons

Question 16

An indicator is a substance that . . .

Answer 16

changes colour at different pH values

Question 16

Negative ions are called

Answer 16

anions

Question 16

Positive ions in electrolysis move towards the . . .

Answer 16

cathode (negative electrode)

Question 17

Positive ions are called

Answer 17

cations

Question 18

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

Answer 18

positive

Question 19

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

Answer 19

bleach and new plastics

Question 20

A base is a substance that will . . .

Answer 20

neutralise an acid

Question 21

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

Answer 21

precipitate

Question 21

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

Answer 21

negative

Question 22

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

Answer 22

evaporating the solvent

Question 22

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

Answer 22

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

Question 24

Positive ions in electrolysis move towards the . . .

Answer 24

cathode (negative electrode)

Question 25

Negative ions are called

Answer 25

anions

Question 25

3 advantages of electroplating are . .

Answer 25

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

Question 26

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

Answer 26

precipitation

Question 26

The negative electrode is called the . . .

Answer 26

cathode

Question 28

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

Answer 28

negative

Question 29

All acids produce this ion in water

Answer 29

H+

Question 31

A base is a substance that will . . .

Answer 31

neutralise an acid

Question 32

Negative ions are . . . . . At the electrodes

Answer 32

oxidised

Question 34

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

Answer 34

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

Question 34

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

Answer 34

chlorine gas, hydrogen gas and sodium hydroxide solution

Question 35

Positive ions are called

Answer 35

cations

Question 37

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

Answer 37

bleach, paper and soap

Question 38

Reduction is . . .

Answer 38

gaining electrons

Question 39

Oxidation is . . .

Answer 39

loss of electrons

Question 40

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

Answer 40

pH

Question 42

Negative ions in electrolysis move towards the . . .

Answer 42

anode (positive electrode)

Question 44

Positive ions are . . . . At the electrodes

Answer 44

reduced

Question 46

3 advantages of electroplating are . .

Answer 46

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

Question 47

Positive ions are . . . . At the electrodes

Answer 47

reduced

Question 48

Negative ions in electrolysis move towards the . . .

Answer 48

anode (positive electrode)

Question 50

The positive electrode is called the . .

Answer 50

anode

Question 51

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

Answer 51

chlorine gas, hydrogen gas and sodium hydroxide solution

Question 53

Alkalis produce this ion in water

Answer 53

-OH

Question 54

An alkali is a . . .

Answer 54

soluble base

Question 55

This method breaks down a substance using electricity

Answer 55

electrolysis

Question 56

An indicator is a substance that . . .

Answer 56

changes colour at different pH values

Question 57

Alkalis produce this ion in water

Answer 57

-OH

Question 58

acid + metal =

Answer 58

a salt + hydrogen

Question 59

The positive electrode is called the . .

Answer 59

anode

Question 60

Acid + base =

Answer 60

a salt + water