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
Mendeleev published a periodic table in 1869. He left gaps in his table.
.1
Why did Mendeleev leave gaps in his table?
[1 mark]
.2
Mendeleev placed iodine after tellurium, although iodine has a smaller atomic weight.
Explain why.
[2 marks]
.3
What is the modern periodic table arranged by?
[1 mark]
3 marksFoundation
Spec and skills
Original practice question
Answer and supported method checks
Humans use the Earth's resources for food, warmth, shelter and transport.
.1
Which resource is finite?
[1 mark]
.2
Define potable water.
[1 mark]
.3
Name one substance or method used to sterilise water.
[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.
