sentences: the water changes from steam to liquid & steam is a kind of gas ->  the water changes from a gas into a liquid  the water changes from a gas into a liquid & water is a kind of substance & condensation is when a substance changes from a gas into a liquid by decreasing heat energy ->  water has condensed in this example  water has condensed in this example & water is a kind of substance & condensation is when a substance changes from a gas into a liquid by decreasing heat energy ->  the water decreased heat energy  the water decreased heat energy & water is a kind of substance & as the temperature of a substance decreases , the molecules in that substance will move slower and closer together -> the molecules in water will move slower and closer together