Acids react with metals, bases and carbonates to make salts.
.1
Name the salt made when magnesium oxide reacts with hydrochloric acid.
[1 mark]
.2
Name the salt made when sodium hydroxide reacts with sulfuric acid.
[1 mark]
.3
Name the gas produced when calcium carbonate reacts with hydrochloric acid.
[1 mark]
4 marksFoundation
Spec and skills
Original practice question
Answer and supported method checks
Molten zinc chloride is electrolysed using inert electrodes.
.1
Explain why the zinc chloride must be molten.
[2 marks]
.2
Name the product at the cathode.
[1 mark]
.3
Name the product at the anode.
[1 mark]
3 marksFoundation
Spec and skills
Original practice question
Answer and supported method checks
A student adds small pieces of four metals to dilute hydrochloric acid and to water.
Table: metal A reacts vigorously with acid and slowly with water; metal B reacts slowly with acid and not with water; metal C does not react with either; metal D reacts vigorously with water.
Metal
With dilute acid
With water
A
Vigorous fizzing
Slow bubbles
B
Slow bubbles
No reaction
C
No reaction
No reaction
D
Too dangerous to try
Vigorous fizzing, melts
.1
Use the results to put the metals in order of reactivity, most reactive first.
[1 mark]
.2
Which metal could be copper?
[1 mark]
.3
Complete the word equation: magnesium + hydrochloric acid → magnesium chloride + ______
[1 mark]
3 marksFoundation
Spec and skills
Original practice question
Answer and supported method checks
The table shows the melting and boiling points of four substances.
Table: A melts at minus 95 and boils at 69 degrees Celsius; B melts at 1085 and boils at 2562; C melts at minus 210 and boils at minus 196; D melts at 44 and boils at 280.
Substance
Melting point in °C
Boiling point in °C
A
−95
69
B
1085
2562
C
−210
−196
D
44
280
.1
Which substance is a gas at 20 °C?
[1 mark]
.2
Which substance is a liquid at 75 °C?
[1 mark]
.3
Give the state symbol for a substance dissolved in water.
[1 mark]
4 marksFoundation
Spec and skills
Original practice question
Answer and supported method checks
Some substances are listed below.
Copper, carbon dioxide, air, sodium chloride.
.1
Which substance is an element?
[1 mark]
.2
Which substance is a mixture?
[1 mark]
.3
Give the number of different elements in the formula CaCO3.
[1 mark]
.4
A student has a mixture of sand and water. Choose the best method to get the sand.
