Question

When wax is heated, it turns into a liquid. How are the wax molecules affected by this change of state?

Answer 1

This question has two correct options, these are OPTION A AND OPTION D.

Wax is a solid substance and its molecules are tightly packed together. When wax is heated, the molecules of wax gains kinetic energy and move about randomly until the inter molecular forces binding them together is broken and the wax turn into liquid. In the liquid state, the molecules have more free movement, so they spread out and the distances between them increase. Thus, when wax is heated, its molecules will have more kinetic energy to overcome the inter molecular bond in the solid and the distances between the molecules increase in the liquid state.