C3.9 Metallic Bonding

Click on the delocalised electrons

Match the following

• Malleable

• Layers can slide

• Can conduct electricity

• Lots of electrostatic attractions between electrons and metal ions

• Very high melting points

• Has delocalised electrons

Metals can conduct electricity because the delocalised electrons can move (a)   the structure

Metals ions are ​ (a)   charged. Electrons are ​ (b)   charged and are not bound to the atom. We describe these electrons as ​ (c)  

• positively
• negatively
• delocalised
• free
• neutrally

Organize these options into the right categories

Groups:

(a) Properties of metals

,

(b) Properties of non-metals

• ductile

• bad conductors of electricity

• malleable

• bad conductors of heat

• shiny

• good conductors of electricity

• dull

• good conductors of heat

Label the diagram of metallic bonding

a

b

free electron

delocalised electron

metal ion

metal atom

What is the basis of a metallic bond?

• the attraction of neutral metal atoms.
• the attraction between protons and neutrons.
• the attraction between positive metal ions and interlocking electrons.
• the attraction between positive metal ions and delocalised electrons.

There are more metals than non metals in the periodic table.

• True
• False

At room temperature, most metals are

• liquid
• solid
• gas
• an alloy

What does malleable mean?

• able to be shaped
• will break easily
• can be used for wire
• is shiny