Anomalous Expansion of water

This will give you some information about the anomalous expansion of water which is prepared by jas Gandhi

1. ANOMALOUS EXPANSION OF WATER Prepared by – Jas Gandhi Class – 6-A Roll no.4 Topic - Chemistry

2. WHAT IS ANOMALOUS EXPANSION OF WATER ??? The anomalous expansion of water refers to the weird property of cooling water. Under normal conditions, we generally see that on heating water, it expands and thus the density decreases. And on cooling, it decreases in size and thus the density increases.

3. What happens in anomalous expansion of water?? In Anomalous expansion of water, it expands instead of contracting at a certain temperature . Water only contracts till it is cooled to 4°C and then stops. During this, the water expands on cooling it to 4°C to 0°C. As a result, the density of the water decreases.

4. Why is anomalous expansion of water necessary??? There are various use of the Anomalous expansion property of water. One of its most important factor is in cold regions, where the top layer of the pond is freezed whearas the bottom of the pond is in liquid form where aquatic animals can survive. It also helps in weathering of rocks. During monsoons, water enters in rocks through small cracks. Then in winter when the temparature drops to 4°C or less, the water expands and thus breaks the rocks. But there is a disadvantage of it also. During winter when the temp. drops to 4 °, the water may expand in pipes and thus can cause pipe bursts.