Simplify the following text for a Grade 7 native English-speaking person.
Original: To find the entropy change of our `` universe '' , we add up the entropy changes for its constituents : the surrounding room and the ice + water . The total entropy change is positive ; this is always true in spontaneous events in a thermodynamic system and it shows the predictive importance of entropy : the final net entropy after such an event is always greater than was the initial entropy .
Simplified: Entropy is the name of some different things .