Question

Explain why silicon dioxide is a suitable material for lining furnaces.

Answer 1

Silicon dioxide has a high melting/boiling point.

Step-by-step explanation:

This is because each atom has four strong covalent (forming a giant covalent structure) that require a large amount of energy to break.

Answer 2

Silicon dioxide is suitable for lining furnaces because of its very high melting point of 1,600 to 1,725 degrees celcius.