Stogs GCSE Interleaving Metals S

A cation is:

• A neutral atom

• A molecule

• A positive ion

• A negative ion

More reactive metals form cations ...

• ... more readily.

• ... less readily.

Select the most reactive metal from the options below:

• Zn

• Ag

• K

• Fe

Select the most reactive metal from the options below:

• Zn

• Fe

• Cu

• Al

In displacement reactions ...

• ... the more reactive metal is displaced from the compound.

• ... the more reactive metal displaces the less reactive metal from the compound.

In redox reactions:

• Electrons are lost.

• Electrons are gained.

• Electrons are lost and gained.

• There is no movement of electrons.

Select the metal which must be extracted by electrolysis.

• Copper

• Aluminium

• Iron

• Silver

Phytoextraction is the use of:

• Bacteria to extract a metal from its ore.

• Plants to extract a metal from its ore.

Bioleaching involves using:

• Bacteria to extract a metal from its ore.

• Plants to extract a metal from its ore.

Oxidation is:

• The addition of oxygen.

• The removal of oxygen.

• The addition of electrons.

• The removal of electrons.