Gibbs free energy determines the spontaneity of a reaction; a negative value indicates the reaction is:

Which thermodynamic quantity measures the randomness of a system?

What is the standard enthalpy of formation of an element in its most stable state?

What is Hess's Law used for?

Which process describes a reaction that absorbs heat from its surroundings?

According to the second law of thermodynamics, entropy of an isolated system tends to:

What does the term 'activation energy' refer to?

What is the enthalpy change called when one mole of a compound forms from its elements?

Which factor does not affect the rate of a chemical reaction?

What is an exothermic reaction?

A catalyst increases reaction rate by: