Complete the following crossword puzzle (Fig. 3.1) by using the name of the chemical elements. Use the data given

Across

2. The element used by Rutherford during his a–scattering experiment

3. An element which forms rust on exposure to moist air

5. A very reactive non–metal stored under water

7. Zinc metal when treated with dilute hydrochloric acid produces a gas of this element which when tested with burning splinter produces a pop sound

Down

1. A white lustrous metal used for making ornaments and which tends to get tarnished black in the presence of moist air

4. Both brass and bronze are alloys of the element

6. The metal which exists in the liquid state at room temperature

8. An element with symbol Pb