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WorksheetsChemistry Revision
Total questions: 20
Worksheet time: 17mins
Which of these is a chemical reaction?
boiling
burning
condensing
melting
Which of these describes a physical change?
A liquid catches fire
A liquid cools down and changes into a solid.
A solid changes colour and releases a gas when heated.
A solid fizzes when added to an acid.
Gas pressure is caused by gas particles …
attracting each other.
hitting each other.
hitting the walls of the container
moving around.
The pressure of a gas increases as the temperature increases because …
there are more particles in the container.
the particles are further apart.
the particles get bigger.
the particles move faster.
Which of these metals reacts quickly with cold water?
copper
gold
silver
sodium
Which salt is formed when magnesium reacts with dilute nitric acid?
magnesium chloride
magnesium oxide
magnesium nitrate
magnesium sulfate
The type of change when a metal reacts with oxygen is …
distillation.
neutralisation.
oxidation.
thermal decomposition.
Which of these shows the essential conditions needed for iron to rust?
air only
air and water only
air, salt and water only
water only
The test for oxygen is that it …
pops a lighted splint.
relights a glowing splint.
turns cobalt chloride paper pink.
turns limewater milky.
A hydrocarbon contains the elements hydrogen and carbon only. Which of these formulae represents a hydrocarbon?
C3H8
C6H12O6
CO2
NaHCO3 3 Which of these
Which of these products is formed when a hydrocarbon burns in plenty of air?
carbon dioxide only
carbon monoxide only
carbon dioxide and water only
carbon monoxide and water only
Which of these reactions needs an input of energy to start it?
hydrogen reacting with oxygen
magnesium reacting with sulfuric acid
sodium hydroxide reacting with hydrochloric acid
potassium reacting with water
Which of these is a displacement reaction?
magnesium + oxygen → magnesium oxide
zinc + iron oxide → zinc oxide + iron
copper carbonate → copper oxide + carbon dioxide
hydrogen + oxygen → water
What will be seen when magnesium is added to copper sulfate solution in exactly the correct concentrations and left until there is no further reaction?
brown solid and blue solution
brown solid and colourless solution
grey solid and blue solution
grey solid and colourless solution
Which is the order of reactivity of the metals, with the most reactive first?
Z, Y, X
Z, X, Y
Y, X, Z
Y, Z, X
Aluminium reacts with iron oxide to form aluminium oxide and iron. Which of these is correct?
Iron displaced aluminium oxide.
Aluminium oxide displaced iron.
Aluminium forms stronger bonds with oxygen than iron forms with oxygen.
Iron forms stronger bonds with oxygen than aluminium forms with oxygen.
Which of these metals occurs uncombined in the Earth’s crust?
iron
lead
magnesium
silver
Which of these metals was first extracted most recently in history?
aluminium
copper
gold
iron
Which of these metals can only be extracted using electrolysis?
copper
copper
potassium
silver
What is reduced in this reaction: zinc oxide + carbon → zinc + carbon dioxide
carbon
carbon
zinc
zinc oxide
