Matter and Thermal Energy Crossword Puzzle

QUESTIONS LIST:

• thermal expansion : an increase in the size of a substance when the temperature is increased.
• sublimation : the process of a solid changing directly to a gas without forming a liquid.
• boiling point : the temperature at which the pressure of the vapor in the liquid is equal to the external pressure acting on the surface of the liquid.
• melting point : the temperature at which a solid becomes a liquid.
• heat of fusion : the energy required to change a substance from solid to liquid at its melting point.
• kinetic theory : also known as kinetic molecular theory, is an explanation of how the particles in gases behave.
• heat of vaporization : the amount of energy required for the liquid at its boiling point to become a gas.
• plasma : matter that has enough energy to overcome not just the attractive forces between its particles but also the attractive forces within its atoms.