We all know water is essential for life and we should drink 8 glasses of water to have a healthy body. We also learn in schools how our drinking water (portable water) are processed from water collection points, before they are pumped into our water taps at home. We also learn in Chemistry Class that water molecule has a molecular formula of H2O and that it?exists as small covalent molecules.
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Below, we will share with you?8 things that you may not know about this precious resource:
1. Water covers over two-thirds of the Earth’s surface, and more than half of the world’s animal and plant species live in it.
2. Tap water tastes best when it is served fresh and chilled.
3. Putting off repairing that incessant drip that is plaguing your bathroom sink? You better get it repaired – cos a small drip can waste as much as 75 litres of water per day.
4. Only three per cent of the earth’s water can be used as drinking water. Seventy five per cent of the world’s fresh water is frozen in the polar ice caps.
5. There is no such thing as “New” water on earth. The volume of water on the planet has not changed in over three billion years. It is just been changing from ice to water to water vapour and back again. We call this the water cycle. That means that the wate that is in our oceans, lakes, our food and even our body (70% by mass) today is the same water that the dinsaurs drink!
6. Water is sometimes called the ‘Universal Solvent’, because more substance can dissolve in water than in any other liquid.
7. Do you think water always boils at 100 degree Celsius? Not true, because altitude and atmospheric pressure can affect boiling point of water. Water does indeed boil at 100 degree Celsius at or near sea level, but the higher you go, the less heat it takes – at 3,000 metres, water boils at only 89 degree Celsius.
8. Boiling and Melting Points of water are affected by the inclusion of impurities. Impurities decrease the?melting point and increase the boiling point water.
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