Heated, water can turn into water還是Heated, water can be turned into water？

不管是冰變成水，還是水變成蒸汽，本人以為，都不應該用be turned into，應該用主動形式。牛津字典上的例句：water turns into ice when it freezes.

water can turn into vapor when it is heated.

水被變成蒸汽，總感覺不對。水變成蒸汽，這樣才可以。