AQA GCSE CHEM Chemical Changes MCQ FT

What is formed when a metal reacts with oxygen?

• a metal alloy

• a metal carbonate

• a metal oxide

• a metal sulfate

What happens in a displacement reaction?

• a less reactive metal takes the place of a more reactive metal in a compound

• a less reactive non-metal takes the place of a more reactive non-metal in a compound

• a more reactive metal takes the place of a less reactive metal in a compound

• a more reactive non-metal takes the place of a less reactive non-metal in a compound

Which of the following will have the most vigorous reaction with dilute acid?

• copper

• iron

• magnesium

• zinc

What is produced when a metal reacts with an acid?

• a salt and carbon dioxide

• a salt and hydrogen

• a salt and oxygen

• a salt and water

Which type of ion do acids produce in aqueous solutions?

• H+

• H-

• OH+

• OH-

What colour is produced when universal indicator is added to a strong acid?

• blue

• green

• purple

• red

What type of reaction occurs between an acid and an alkali?

• displacement

• neutralisation

• oxidation

• reduction

What is the name of the negative electrode in electrolysis?

• anode

• cathode

• diode

• zincode

Aluminium can be extracted from molten aluminium oxide by electrolysis. Large amounts of energy are required to melt the aluminium oxide. What is aluminium oxide mixed with to reduce energy costs?

• bauxite

• carbon

• cryolite

• water

In the electrolysis of aqueous sodium chloride, what is produced at the anode?

• chlorine

• hydrogen

• sodium

• oxygen