Chapter 14 Vocabulary

Front

What consists of positively and negatively charged particles?

Back

Plasma is a state of matter that consists of charged particles, including ions and electrons.

Front

What is the amount of energy needed to change a substance from a solid to a liquid at its melting point?

Back

Heat of fusion is the energy required to change a substance from solid to liquid at its melting point.

Front

What is the amount of energy needed for a liquid at its boiling point to become a gas?

Back

Heat of vaporization is the energy required for a liquid to become a gas at its boiling point.

Front

What is the temperature at which the pressure of the vapor in a liquid is equal to the external pressure acting on the surface of the liquid?

Back

Boiling point is the temperature at which the vapor pressure of a liquid equals the external pressure.

Front

At what temperature does a solid begin to turn into a liquid?

Back

Melting point is the temperature at which a solid begins to melt and turn into a liquid.

Front

What is the process called when a solid changes directly into a gas without becoming a liquid?

Back

Sublimation is the process where a solid changes directly into a gas.

Front

What is the term for the energy required to change a liquid into a gas at its boiling point?

Back

Heat of vaporization is the energy needed to convert a liquid into a gas at its boiling point.

Front

What is the term for the temperature at which a solid becomes a liquid?

Back

Melting point is the specific temperature at which a solid turns into a liquid.

Front

What is the term for the resistance of a liquid to flow?

Back

Viscosity is a measure of a fluid's resistance to flow.

Front

What is the term for the amount of energy needed to raise the temperature of a substance?

Back

Specific heat is the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius.