Bonding and Structure: True or False?

Methane is a gas at room temperature because the bonds between the atoms are weak.

• True

• False

Ethane has a higher boiling point than methane because there are more bonds to break.

• True

• False

Carbon dioxide has a higher boiling point than methane because its atoms are held together by double bonds rather than single bonds.

• True

• False

Diamond has a high melting point because the atoms are all joined by covalent bonds in a lattice (or giant network).

• True

• False

Diamond has a high melting point because there are strong covalent bonds between its molecules.

• True

• False

In a sample of copper metal, the metallic structure is held together by the attraction between the copper ions.

• True

• False

Copper has a high melting point because there are strong forces of attraction between the copper ions and the free moving delocalised electrons.

• True

• False

Metals can conduct electricity in solid state because all of copper's electrons are free to move.

• True

• False

Copper has a high melting point because there are lots of strong covalent bonds to break.

 

• True

• False

Copper can be bent because the layers of copper ions can slide over each other easily.

• True

• False