AQA Chemistry P1 Revision

What is meant by the term 'displacement reaction'?

• When a fuel reacts with oxygen and releases energy

• When a reaction absorbs energy from the surroundings

• When a more reactive element takes the place of a less reactive element in a compound

• When a less reactive element takes the place of a more reactive element in a compound

A pure susbtance which is made from only one type of element is ...

• a mixture

• a compound

• an element

Which is most reactive ?

• Platinum

• Copper

• Iron

• Pottasium

What will be produced if magnesium metal is added to a solution of copper sulfate ?

• Sulfur dioxide, copper and magnesium

• Cooper magnesium plus sulfar

• Copper plus magnesium sulfate

In Industry which metal element is used to displace valuable copper from a solution containing waste copper compounds ?

• Sodium

• Pottasium

• Platinum

• Iron

What will happen if silver metal is added to a solution of zinc chloride ?

• There will be an explosion

• There will be no reaction

• The silver will displace the zinc

What name is given to the elements in group 1 ?

• Alkali metals

• noble gases

• halogens

Why must the elements in group 1 be stored under oil ?

• They are poisonous

• They are valuable

• They are unreactive

• They react quickly with oxygen and air

What is produced when sodium reacts with water ?

• Sodium oxide

• Sodium hydroxide and hydrogen

• Sodium Chloride

• Sodium oxide and water

What would you expect to see when a piece of potassium is placed into a large bowl of water ?

• Floats, fizzes, moves around quickly, sparks

• Sinks, no reaction

• Floats, moves around slowly