Water exists in three states: solid, liquid and gaseous. At a normal temperature of about 25oC it is liquid, but below 0oC it will freeze and turn to ice. Water can be found in the gaseous state above 100oC, this is called the boiling point of water, at which water starts to evaporate. The water turns to gas and is then odourless and colourless.How fast water evaporates depends on the temperature; if the temperature is high, water will evaporate sooner. Grade : 7 Subject : Biology Lesson : Water Topic: Composition and States of Water Useful for CBSE, ICSE, NCERT & International Students
Composition and States of Water – Water (CBSE Grade : 7 Biology)
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