Question

When thermal energy is applied to water, the water’s temperature rises until 100℃ and then stays the same. Which is the best explanation?(1 point)

When the water reaches 100℃, any increase in thermal energy goes to breaking the bonds between water molecules as the water boils and becomes steam.

When the water reaches 100℃, the flow of thermal energy reverses, maintaining an equilibrium.

When the water reaches 100℃, any increase in thermal energy becomes potential energy.

When the water reaches 100℃, it can no longer absorb thermal energy.

Answer 1

When the water reaches 100℃, any increase in thermal energy goes to breaking the bonds between water molecules as the water boils and becomes steam.

Explanation: At the boiling point added heat becomes latent heat of vaporization — it breaks intermolecular attractions so liquid turns to gas, rather than increasing temperature.