A-Level CAIE Chemistry A2 23.3.2—Predict/explain the sign of the entropy Question Bank

• Predict/explain: the sign of the entropy changes that occur:

- (a) during a change in state, e.g. melting, boiling and dissolving (and their reverse)

- (b) during a temperature change

- (c) during a reaction in which there is a change in the number of gaseous molecules