Stogs GCSE Interleaving Metals M

A cation is:

• A neutral atom

• A molecule

• A positive ion

• A negative ion

Cations form when atoms ...

• ... gain electrons to form negative ions.

• ... lose electrons to form positive ions.

• ... gain electrons to form positive ions.

• ... lose electrons to form negative ions.

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.

Select the displacement reaction from the options below:

• $2AgNO_3\ +\ Cu\ \rightarrow\ Cu\left(NO_3\right)_2\ +\ 2Ag$

• $HCl\ +\ KOH\ \rightarrow\ KCl\ +H_2O$

• $2Na\ +\ Cl_2\ \rightarrow\ 2NaCl$

• $CaCO_3\ +\ 2HCl\ \rightarrow\ CaCl_2\ +\ H_2O\ +\ CO_2$

Displacement reactions are an example of ...

• ... neutralisation.

• ... redox reaction.

• ... combustion.

• ... disproportionation reaction.

In redox reactions:

• Electrons are lost.

• Electrons are gained.

• Electrons are lost and gained.

• There is no movement of electrons.

Gold is found uncombined in the Earth’s crust because it is...

• Unreactive

• Reactive

• Plentiful

• Shiny