Complete the statements given below, by filling in the blank with the correct word/s:

1. The ability of a metal to produce a resonant sound …………… [ductility/sonority/malleability].

2. A metal which floats on water …………… [zinc/potassium/magnesium].

3. A non-metal that leaves a mark on paper …………… [phosphorous/graphite/sulphur].

4. A non-metal which allows an electric current to pass through it …………… [graphite/sulphur/iodine].

5. A non-metal added to swimming pools to kill germs …………… [nitrogen/chlorine/oxygen].

Give reasons for the following:

1. Metals form cations while non-metals form anions.

2. Potassium reacts vigorously with cold water while copper does not react with water or steam.

3. Rusting reduces the structural strength of iron.

4. A suspension of rust is basic in nature.

5. Galvanized steel is not used for articles used for edible applications.

Name the following:

1. The most reactive halogen.

2. A metal used in packaging.

3. The chemical compound responsible for the green deposit on the surface of articles of copper.

4. A metal used in flexible pipes.

5. A halogen which is solid at room temperature.

Match the correct answer from A, B, C, D and E – for each statement given below:

A : Boron, B : Chlorine, C : Potassium, D : Platinum, E : Radon

1. The element placed in the extreme left of the Modern Periodic Table.

2. The element which shows properties of both metals and non-metals.

3. The element from the halogen family which is most abundant.

4. The element which is noble gas and radioactive in nature.

5. The element which is a noble metal.