Metals and Non-metals question bank (Science)

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.

Write equations for the reactions of:
$(i)$ Iron with steam
$(ii)$ Calcium and potassium with water