Classify the following into metals and non-metals:
Copper, iron, graphite, sulphur, aluminium, oxygen
Metals: Copper, iron, aluminium
Non-metals: Graphite, sulphur, oxygen
(a) What are metalloids? Name two metalloids.
(b) Classify the following elements into metals,non-metals, and metalloids:
Copper, Sulphur, Aluminium, Oxygen, Silicon, Nitrogen, Germanium, Mercury, Chlorine, and Sodium.
State one use each of the following non-metals: Copper, Aluminium, Iron, Silver, Gold, Mercury