Name the metal which is used in making thermometers.

48 State one use each of the following metals: Copper, Aluminium, Iron, Silver, Gold, Mercury 49 State one use each of the following non-metals: Hydrogen, Carbon (as Graphite), Nitrogen, Sulphur 50 Why does aluminium not react with water under ordinary conditions? 50 Name two metals which can displace hydrogen from dilute acids.