Question bank2.3 Properties of materials

2.3 Properties of materials

Buckminsterfullerene, $C60\mathrm{C_{60}}$ , and diamond are both forms of carbon.

$C60\mathrm{C_{60}}$ has a much lower melting point than diamond.

Which statement explains this?

[1]

The covalent bonds in $C60\mathrm{C_{60}}$ are much weaker than those in diamond.

Diamond is made of simple molecules, but $C60\mathrm{C_{60}}$ is a giant structure.

Melting $C60\mathrm{C_{60}}$ only overcomes weak forces between separate molecules.

$C60\mathrm{C_{60}}$ has fewer carbon atoms, so it has fewer covalent bonds to break.

Buckminsterfullerene, $C60\mathrm{C_{60}}$ , and diamond are both forms of carbon.

$C60\mathrm{C_{60}}$ has a much lower melting point than diamond.

Which statement explains this?

The covalent bonds in $C60\mathrm{C_{60}}$ are much weaker than those in diamond.

Diamond is made of simple molecules, but $C60\mathrm{C_{60}}$ is a giant structure.

Melting $C60\mathrm{C_{60}}$ only overcomes weak forces between separate molecules.

$C60\mathrm{C_{60}}$ has fewer carbon atoms, so it has fewer covalent bonds to break.

2.3 Properties of materials Questions