Question

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Answer 1

A- when potassium is added to water the metal melts and floats . It moves around very quickly on the surface of the water

B-When zinc reacts with hydrochloric acid it produces zinc chloride and hydrogen gas.

C-In ordinary air, sodium metal reacts to form a sodium hydroxide film, which can rapidly absorb carbon dioxide from the air, forming sodium bicarbonate. ... The temperature of burning sodium increases rapidly to more than 800 °C (1,500 °F), and under these conditions the fire is extremely difficult to extinguish.

Answer 2

Answer:

a- when potassium is added to water the metal melts and floats . It moves around very quickly on the surface of the water

b-When zinc reacts with hydrochloric acid it produces zinc chloride and hydrogen gas.

c-In ordinary air, sodium metal reacts to form a sodium hydroxide film, which can rapidly absorb carbon dioxide from the air, forming sodium bicarbonate. The temperature of burning sodium increases rapidly to more than 800 °C (1,500 °F), and under these conditions the fire is extremely difficult to extinguish.