Structure and bonding model answers

Front

Give examples of giant covalent lattices

Back

Silicon dioxide, diamond, graphite

Front

Give examples of simple covalent molecules

Back

Substances formed from non-metals eg Water, oxygen, nitrogen, carbon dioxide, fullerenes, methane

Front

Give examples of giant ionic lattices

Back

Substances formed from ions (metals and non-metals) eg sodium chloride, magnesium oxide, salts

Front

Give examples of giant metallic lattices (TRIPLE ONLY)

Back

any metal

Front

Define covalent bonding in terms of forces of attraction

Back

Strong electrostatic attraction between positive nuclei and the shared electrons.

Front

Define ionic bonding in terms of forces of attraction

Back

Strong electrostatic attraction between oppositely charges ions.

Front

Define a metallic bond in terms of forces of attraction

(TRIPLE ONLY)

Back

Strong electrostatic attraction between layers of positive metal ions and the sea of delocalised electrons.

Front

Explain if giant covalent structures (excluding graphite) conduct electricity

Back

Cannot conduct. No ions or delocalised electrons to carry charge.

Front

Explain if graphite conducts electricity

Back

Can conduct due to delocalised electrons which can move through the structure and carry their charge.

Front

Explain if simple covalent structures can conduct electricity

Back

Cannot conduct. No ions or delocalised electrons to carry charge