# data[].attributes.headline
A phase change ischaracterized by a change in thermal energy without a change in temperature.

# data[].attributes.subject
A phase change ischaracterized by a change in thermal energy without a change in temperature.

# data[].attributes.headline
L sub f transformation of solid & liquid

# data[].attributes.subject
L sub f transformation of solid & liquid

# data[].attributes.headline
amount of heat energy that causes 1kg of a substance to undergo a phase change

# data[].attributes.subject
amount of heat energy that causes 1kg of a substance to undergo a phase change

# data[].attributes.headline
L sub v transformation of liquid and gas

# data[].attributes.subject
L sub v transformation of liquid and gas

# data[].attributes.headline
A system at the melting point is in phase equilibrium.

# data[].attributes.subject
A system at the melting point is in phase equilibrium.

# data[].attributes.body
The temperature at which a liquid becomes a gas