Metals And Water

Question 1

Add + water —> _______ hydroxide + hydrogen

Answer 1

Calcium + water —> calcium hydroxide + hydrogen

Potassium + water —> potassiun hydroxide + hydrogen

Question 2

Magnesium reacts ___ with cold water. But it reacts ______ with steam.

Answer 2

Magnesium reacts slowly with cold water. But it reacts quickly with steam.

Question 3

Zinc and iron also react with steam. The products are hydrogen and a metal oxide.

Answer 3

Copper and gold are unreactive. They do not react with cold water or steam just as they do not react with dilute acids and oxygen.