Give an example of a metal which:
(i) is a liquid at room temperature
(ii) can be easily cut with a knife
(iii) is the best conductor of heat
(iv) is a poor conductor of heat
(i) Mercury is liquid at room temperature.
(ii) Sodium can be easily cut with a knife.
(iii) Silver is the best conductor of heat.
(iv) Lead is a poor conductor of heat.