sodium, hydrogen, potassium, aluminum.
Q34. The pure metal aluminum was very rare and extremely expensive until relatively
recently. Find out how aluminum was prepared and the year when it was first isolated.
Q35. Find out the most common uses of the metal copper. Identify the physical properties of
copper that makes it well suited to those uses.
Q36. Find out the most common uses of the metal gold. Identify the physical properties of
gold that makes it well suited to those uses.
Q37. Find out the most common uses of the metal magnesium. Identify the physical
properties of magnesium that makes it well suited to those uses.
Fig: 1