Ch 12: Metals

Match the physical property of the metal to its use related to the property.

• good conductor of heat

• used to make cooking pans

• ductile

• used to make ornaments

• malleable

• used to make car bodies

• shiny

• used to make wires

Select the correct chemical properties of metals.

• react with steam to form metal hydroxide and hydrogen

• react with cold water to form metal hydroxide and hydrogen

• react with acids to form salt and hydrogen

• a more reactive metal displaces a less reactive metal from its compound

Draw a diagram that represents an alloy.

When a different​ (a)   is added, the​ (b)   arrangement of the atoms in pure metal is disrupted by a few atoms of a ​ (c)   size of the other element. The layers of ​ (d)   can no longer slide over one another, making alloys harder and stronger.

• element
• orderly
• different
• atoms
• compound
• disorderly
• molecules
• same

Aluminium is ______________ in the reactivity series.

• below magnesium

• above sodium

• below gold

• between iron and copper

Iron reacting with steam produces ______________________.

• iron oxide only

• iron oxide and water

• iron oxide and hydrogen

• iron hydroxide only

Magnesium and hydrochloric acid produces ____________________.

• magnesium chloride and hydrogen

• no reaction

• magnesium oxide and hydrogen

• magnesium hydroxide and hydrogen

Copper and hydrochloric acid produces ____________________.

• copper chloride and hydrogen

• no reaction

• copper oxide and hydrogen

• copper hydroxide and hydrogen

The reaction of iron and copper (II) sulfate is an example of _______________.

• thermal decomposition

• displacement

• neutralisation

• combustion

Which metal will react explosively with dilute hydrochloric acid?

• copper

• magnesium

• iron

• sodium