thermochemistry 2

The heat absorbed or given off when 1 mole of a substance is formed from its element

• Ethalpy

• heat of reaction

• Enthalpy of formation

• Entropy

the heat required to melt 1 gram of a substance at its melting point

• Heat of Fusion

• Heat of melting

• Enthalpy

• Entropy

The heat released or gained during a chemical reaction

• Heat of fusion

• Heat of vaporization

• Heat of reaction

• entropy

The measure of randomness in a system

• Heat of formation

• heat of reaction

• enthalpy

• entropy

the heat per unit mass required to vaporize a substance at its boiling point

• Heat of fusion

• heat of vaporization

• heat of reaction

• entropy

the symbol for change in entropy

• ΔG

• ΔH

• ΔS

• ΔT

Predicts the spontaneity of a reaction

• entropy

• enthalpy

• heat of reaction

• Gibbs free entropy

The entropy is increasing

• ΔS is positive

• ΔS is negative

Energy is neither created or destroyed it only changes form

• first law of thermodynamics

• second law of thermodynamics

• third law of thermodynamics

Disorder or entropy in the universe is increasing

• first law of thermodynamics

• 2nd law of thermodynamics

• 3rd law of thermodynamics