What is water? Water details part-1

What is water

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What is water

Water for life

Water

Of all the liquids available on earth, water is the most readily available. Water is 70-75 percent of the human body. Fish, meat or vegetables contain 80-90 percent water.

About 75% of the earth’s surface is water. Water is essential for our survival, so water is another name for life. Then let us know about some important religions of water.

What is water

The religion of water

Melting point and Boiling point

Do you remember the melting point and boiling point of water? When water is solid it is called ice. The temperature at which ice melts is the melting point of ice. The melting point of ice is 0 ° Celsius.

On the other hand, the temperature at which liquids evaporate under atmospheric pressure is called boiling point.

Boiling point of water 99.96 ° Celsius which is very close to 100 ° Celsius) so generally we say water boiling point is 100 ° Celsius. Pure water is tasteless, odorless and colorless).

Do you know the density of water? ( What is water )

The concentration of water depends on the temperature. The highest concentration of water at 4 ° Celsius is 1 g / cc or 1000 kg / m cube. That is 1 cc. The mass of water is 1 gram or 1 cubic meter the mass of water is 1000 kg.

What is water
Electricity or conductivity

Electricity or electricity is not transmitted in pure water, but it is transmitted when electrolytic substances like salts or acids are dissolved in it. One of the special properties of water is that it can dissolve most inorganic compounds and many organic compounds.

This is why water is also called universal solvent. Water is a bipolar substance that sometimes acts as an acid, sometimes as an alkali. Usually water acts as alkali in the presence of acid and as acid in the presence of alkali. However, pure water is completely neutral, that is, its pH is 7, which we will learn later.

What is water

The structure of water

Have you ever wondered what this water, essential for our lives, is made of? A water molecule is made up of one atom of oxygen and two atoms of hydrogen through modern technology we now know that the water we see contains many water molecules together as a cluster.

Water source

Can you tell us from which source we get this much needed water? The largest source of water is the sea, ocean or ocean. The sea is the source of almost 90 percent of the world’s water. Sea water contains a lot of salt, so sea water is also called marine water.

Seawater is unsuitable for drinking because of the salt, and in most cases seawater cannot be used for other purposes. Another major source of water is glacier glaciers, where water is mainly ice. This source contains about 2% water. Note that this water is also in the form of ice but is not suitable for other uses.
Sources of usable water are rivers, canals, lakes, ponds or ground water. We draw groundwater through tube wells. The melting of snow or ice on mountains can also cause waterfalls. It is noteworthy that only 1 percent of the world’s usable water.

What is water

Fresh water source

Where do we get water for washing, bathing or drinking water in our homes, starting from cooking? The field needs a lot of water to grow crops. Where do we get this water?

Since there are not many springs in our country, the main source of fresh water is rivers, canals, ponds, lakes and ground water.

However, due to the presence of harmful chemicals, especially arsenic, groundwater in large areas of Bangladesh has become unfit for drinking. So people in those areas have been forced to drink rainwater after collecting it.

What is water

Water requirements for aquatic plants

You have heard the names of various aquatic plants like water hyacinth, khudipana, guripana, topapana, shapla, padma, algae, hydrala, kalmi, helencha, keshardam etc. and you have seen many of them with your own eyes. Do you know where they were born?

Most of them grow in water and there are some plants (such as: Kalmi, Helencha, Keshardam) which grow in both water and soil. That is, without water most aquatic plants would not grow, some might grow but could not survive or grow even if they survived.

What would have happened then? Then there would be a catastrophic environmental catastrophe. This is because these aquatic plants, on the one hand, produce oxygen through photosynthesis and maintain the level of dissolved oxygen in the water, on the other hand, many of them, especially algae, serve as food for aquatic animals.

Without these aquatic plants, many aquatic animals, including fish, could not survive. It would be a serious threat to the environment. You know that plants usually collect water and other essential nutrients through the roots. But aquatic plants collect water and other essential elements, especially mineral salts, throughout the body.

So if their whole body did not come in contact with water, they would not grow. Another remarkable thing is that the stems and other limbs of aquatic plants are very soft, which is well adapted to the flow of water and the movement of aquatic animals.

If they were born on dry land without water, they would break down and grow and not even survive. Do you know how aquatic plants reproduce? Aquatic plants usually reproduce organically. Without water this reproduction would have been hampered.

So we can say that the birth of aquatic plants is very important for maintaining the balance of our environment and the role of water is very important for their growth. Without water, aquatic plants would not be able to grow and survive, resulting in a catastrophic environmental catastrophe.


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