(a) Visit in your area and collect the following articles. (See lesson 4)
(i) Copper wire, (ii) Sulphur, (iii) Aluminium sheet, (iv) Iron nail, (v) Iodine crystal
Answer the following:
(a) Classify these articles into metals, and non-metals
(b) There is a brown coating on the iron nail. Explain the reason
(c) Identify good conductors of heat, and define conductivity.
(d) Write down the reaction of metals with water.
(e) Write down the reactions of non-metals with water