Can you suggest an experiment

CBSE Class 10 CBSE Class 10 Science
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1

Can you suggest an experiment to prove that ionic compounds possess strong bonds when compared to that of covalent bonds ? Explain the procedure

2
  1. Take a small amount of sodium chloride (NaCl) on a metal spatula (having an insulated handle).
  2. Heat it directly over the flame of a burner.
  3. We will see that sodium chloride (NaCl) does not melt easily.
  4. Sodium chloride melts (and becomes a liquid) only on strong heating.
  5. This shows that sodium chloride which is an ionic compound possess strong bonds.
  6. So it has a high melting point.
  7. Whereas covalent compound like naphthalene and carbon tetra chloride has low boiling points such as 80°C and 77°C respectively.
  8. The force of attraction between the molecules of a covalent compound is very weak.
  9. Only a small amount of heat energy is required to break these weak molecular forces, due to which covalent compounds have low melting points and low boiling points.