Question

Story writting on the chemical reaction ( the balancing act )

Answer 1

Answer:

 matter which finally became our planet, consisted all of only the atoms of almost l00 chemical elements. Hundreds, thousands, millions of years passed. Conditions changed. The atoms reacted with one another. The gigantic laboratory of nature began to operate. During its long evolution nature, the chemist, learned to prepare all kinds of substances, from the simple water molecule to infinitely complex proteins.

The evolution of the globe and of life on it is due largely to chemistry.

For the great diversity of chemical compounds owes its existence to processes called chemical reactions. They are the true spirit of chemical science, and its principal subject matter. It is impossible to estimate even approximately the number of chemical reactions that occur in the world, say, in the course of only one second.

For instance, for a person to pronounce the word “second” many chemical processes must occur in his brain. We speak, think, enjoy ourselves, or worry, and all these actions are backed by millions of chemical reactions.

We never see these reactions, but there is also an immense number of chemical reactions that we do observe daily, just offhand, without stopping to think of them. We put a slice of lemon into a cup of strong tea and the tea becomes pale. We strike a match and a stick of wood bursts into flame and turns into charcoal.

These are all chemical reactions.

The primeval man who learned to light a fire was the first chemist. He accomplished at will the first chemical reaction, that of combustion. And this reaction is the most necessary, the most important in all the history of mankind.

It gave our distant ancestors the heat to warm their dwellings on cold days. In our time it has opened the way to outer space by propelling rockets weighing many tons into the sky. The legend of Prometheus who gave people fire is at the same time the legend of the first chemical reaction.

When simple or complex substances interact with each other, they usually let us know about it.

Drop a piece of zinc into a solution of sulphuric acid. Immediately gas bubbles begin to rise from it and after some time the metal disappears. The zinc dissolves in the acid, liberating hydrogen. You could see for yourself how it all happened.

Or light a lump of sulphur. It burns with a bluish flame and you can smell the asphyxlating odour of sulphur dioxide, the chemical compound which forms when sulphur combines with oxygen.

Moisten anhydrous copper sulphate CuSO4, a white powder, with water and it immediately turns blue. The salt combines with the water to form crystals of blue vitriol CuSO4 • 5H2O. Substances of this kind are called crystal hydrates.

Do you know what quenching of lime is? Water is poured on quicklime and the result is slaked lime Ca(OH)2. Though the substance does not change colour, it can easily be seen that a reaction has occurred, because when lime is quenched a great deal of heat is liberated.

The primary and invariable condition of all chemical reactions is that they are accompanied by the liberation or absorption of thermal energy. Sometimes so much heat is liberated that it can readily be felt. When the amount of heat evolved is small, special methods of measurement are used.

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Answer 2

Story writting on the chemical reaction

• matter which at last turned into our planet, comprised all of just the molecules of nearly l00 concoction components. Hundreds, thousands, a huge number of years passed. Conditions changed.The enormous research facility of nature started to work. During its long development nature, the scientific expert, figured out how to set up a wide range of substances, from the straightforward water atom to boundlessly complex proteins.  

• The advancement of the globe and of life on it is expected to a great extent to science.  

• For the incredible decent variety of concoction mixes owes its reality to forms called compound responses. They are the genuine soul of synthetic science, and its chief topic. It is difficult to assess even roughly the quantity of substance responses that happen on the planet, state, throughout just one second.  

• For example, for an individual to articulate "second" numerous concoction forms must happen in his mind. We talk, think, live it up, or stress, and every one of these activities are supported by a large number of compound responses.  

• We never observe these responses, however there is likewise an enormous number of synthetic responses that we do watch every day, only spur of the moment, ceaselessly to consider them. We put a cut of lemon into some solid tea and the tea gets pale. We light up a match and a stick of wood blasts into fire and transforms into charcoal.  

• These are generally compound responses.  

• The antiquated man who figured out how to light a fire was the main scientist. He achieved voluntarily the principal synthetic response, that of ignition. What's more, this response is the most essential, the most significant in all the historical backdrop of humankind.  

• It gave our inaccessible predecessors the warmth to warm their abodes on chilly days. Presently it has opened the best approach to space by impelling rockets weighing numerous tons into the sky. The legend of Prometheus who gave individuals fire is simultaneously the legend of the principal compound response.  

• At the point when basic or complex substances collaborate with one another, they for the most part let us think about it.  

• Drop a bit of zinc into an answer of sulphuric corrosive. Quickly gas bubbles start to ascend from it and after some time the metal vanishes. The zinc disintegrates in the corrosive, freeing hydrogen. You could see with your own eyes how everything occurred.  

• Or on the other hand light a chunk of sulfur. It ignites with a pale blue fire and you can smell the asphyxlating scent of sulfur dioxide, the concoction compound which structures when sulfur consolidates with oxygen.  

• Dampen anhydrous copper sulfate CuSO4, a white powder, with water and it promptly turns blue. The salt consolidates with the water to frame precious stones of blue bitterness CuSO4 • 5H2O. Substances of this sort are called gem hydrates.  

• Do you realize what extinguishing of lime is? Water is poured on quicklime and the outcome is slaked lime Ca(OH)2. Despite the fact that the substance doesn't change shading, it can without much of a stretch be seen that a response has happened, in light of the fact that when lime is extinguished a lot of warmth is freed.  

• The essential and perpetual state of every single concoction response is that they are joined by the freedom or ingestion of warm vitality. In some cases so a lot of warmth is freed that it can promptly be felt. At the point when the measure of warmth advanced is little, unique strategies for estimation are utilized.