Thermodynamics Flashcard

Front

What law states that energy is neither created nor destroyed in a chemical reaction?

Back

Law of Conservation of Energy

Front

What is the amount of heat released by one mole of a substance changing it from liquid to solid?

Back

Heat of Solidification

Front

What term describes the changes in energy that happen in chemical reactions and changes of state of matter?

Back

Thermochemistry

Front

The amount of heat absorbed by one mole of a substance as it goes from liquid to gas.

Back

Heat of Vaporization

Front

What is heat?

Back

The energy transfer due to a difference in temperature.

Front

What is the first law of thermodynamics?

Back

Energy cannot be created or destroyed, only transformed.

Front

Define enthalpy.

Back

Enthalpy is the total heat content of a system, used to measure energy changes in chemical reactions.

Front

What is the difference between exothermic and endothermic reactions?

Back

Exothermic reactions release heat, while endothermic reactions absorb heat.

Front

What is the heat of fusion?

Back

The amount of heat required to convert a solid into a liquid at its melting point.

Front

What is the significance of the heat capacity of a substance?

Back

Heat capacity measures the amount of heat needed to change a substance's temperature by one degree Celsius.