Question

Select the correct terms to complete the statement:

The particles that make up a substance in its liquid state have ____ (less / more / the same) kinetic energy than those of the same substance in its solid state .

For a solid to melt, energy must be
energy must be ______
(added to / removed from) the system.

For a liquid to freeze, energy must be ____ (added to / removed from) the system.

Blank 1:
Blank 2:
Blank 3:

Answer 1

The particles that make up a substance in its liquid state have more kinetic energy than those of the same substance in its solid-state.

For a solid to melt, energy must be added to the system.

For a liquid to freeze, energy must be removed from the system.