Question

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

	Across		Down
2	The element used by Rutherford during his α–scattering experiment	1	A white lustrous metal used for making ornaments and which tends to get tarnished black in the presence of moist air
3	An element which forms rust on exposure to moist air	4	Both brass and bronze are alloys of the element
5	A very reactive non–metal stored under water	6	The metal which exists in the liquid state at room temperature
6	Zinc metal when treated with dilute hydrochloric acid produces a gas of this element which when tested with burning splinter produces a pop sound.	8	An element with symbol Pb

Answer 1

	Across		Down
2	Gold	1	Silver
3	Iron	4	Copper
5	Phosphorus	6	Mercury
7	Hydrogen	8	Lead