Metals in acid, water and oxygen

If a metal reacts with hydrochloric acid .......... gas will be produced.

• hydrogen

• oxygen

• carbon dioxide

• nitrogen

if a reaction between a metal and hydrochloric acid occurs a .......... salt will also be made.

• table

• oxide

• sulphate

• chrloride

magnesium + hydrochloric acid -> ?

• hydrogen only

• hydrogen + magnesium chloride

• hydrogen + magnesium sulphate

• magnesium + hydrochloric acid

To burn a metal we require ..........

• argon

• oxygen

• carbon dioxide

• nitrogen

A reaction between a metal and oxygen will produce an ...

• oxidant.

• oxide.

• sulphate.

• chrloride.

Copper + Oxygen ->

• copper

• copper oxide

• copper + oxide

• copper + oxygen

Select the correct order from most reactive to least reactive metal.

• copper-> iron->magnesium

• copper-> magnesium->iron

• iron->copper->magnesium

• magnesium->iron->copper

Berylium (Be) is less reactive than magnesium (Mg). Calcium (Ca) will be ...... reactive than magnesium.

• more

• less

• equally

• never more

When calcium reacts with water hydrogen gas and .......... are produced.

• calcium chloride

• iron hydroxide

• calcium hydroxide

• iron chloride

When iron is placed in water rust forms. Another word for rust is...

• hydrogen gas

• iron chloride

• iron dioxide

• iron oxide