Question

17. What are ionic compounds? Mention any two properties of ionic compounds.
OR
Name any two metals that react with cold water very quickly. Write the products
formed when these metals react with cold water.​

Answer 1

Answer:

Ionic Compounds have high boiling and melting points as they're very strong and require a lot of energy to break. The electrostatic forces of attraction between oppositely charged ions lead to the formation of ions. Ionic compounds form crystals. These compounds are brittle and break into small pieces easily.

Answer 2

Answer:

Ionic Compounds have high boiling and melting points as they’re very strong and require a lot of energy to break.

The electrostatic forces of attraction between oppositely charged ions lead to the formation of ions.

Ionic compounds form crystals.

These compounds are brittle and break into small pieces easily.

OR

The 2 metals that react with cold water very quickly are sodium and potassium.

1. Sodium is a metal which rapidly reacts with cold water and in this reaction; sodium hydroxide, hydrogen are formed.

This is an exothermic reaction:

Na + H2O = NaOH + H2

2. Potassium:

Similarly potassium also react with cold water to make potassium hydroxide, hydrogen gas.

Chemical reaction:

K + H2O = KOH + H2