Question

Metals such as sodium and ______ react rapidly and vigorously with cold water to produce metal_____ with the evolution of ____gas. On the other hand, ______ reacts slowly and less vigorously and the gas released in the reaction sticks on the surface of metal making it to float on the surface of water. Metals such as zinc, aluminium and _____ react only with steam to produce metal ________ with the evolution of gas.

Answer 1

1. Pottasium
2. Hydroxide or oxide
3. Hydrogen
4. Calcium
5. Iron
6. oxide
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