The knowledge about nature has grown up into a variety of science whose concepts, techniques , and applications are interdependent. Nowadays, millions of people earn their living by working with the science called chemistry. It is the knowledge about the study of matter, the changes that take place in it and the laws which govern these changes. It is younger than astronomy and older than psychology.
Experiments and explanation are the heart of chemical research. The first step is to define the problems. The next step is to perform experiments, make careful observations and collect data like a rise in temperature, a change in color, the evolution of gas and so on.After a series of experiments, recording and describing the experiment in scientific language using symbols and equation is done. Then the chemist attempts to explain the phenomenon. If a hypothesis is successful it becomes as a theory.
Chemistry is an interesting subject. Many products that we used in our daily life like the households items-plastics, synthetic fibers,synthetic rubber,soaps, body and hair sprays are the products of chemistry. Much of our food, medicine,and drugs are also prepared in chemical laboratories. Every day, more and more new drugs are discovered for the benefit of mankind.
It gives answers to the questions of the different substances having different properties.Why do they have different properties? For example, Why does petrol burn but water does not? What is the difference in composition of petrol and water?
Matter undergoes varieties of changes.For example, Why does iron rust? Why does milk turn sour?
All substances do not occur in nature. For example, plastics does not occur in nature but is prepared by chemical process.Iron does not occur in free state but is extracted from the iron compounds that occur in mines. Washing soda is manufactured by chemical process.
So, if we want to learn all about them, then we should study chemistry.
Chemistry is an interesting subject. Many products that we used in our daily life like the households items-plastics, synthetic fibers,synthetic rubber,soaps, body and hair sprays are the products of chemistry. Much of our food, medicine,and drugs are also prepared in chemical laboratories. Every day, more and more new drugs are discovered for the benefit of mankind.
It gives answers to the questions of the different substances having different properties.Why do they have different properties? For example, Why does petrol burn but water does not? What is the difference in composition of petrol and water?
Matter undergoes varieties of changes.For example, Why does iron rust? Why does milk turn sour?
All substances do not occur in nature. For example, plastics does not occur in nature but is prepared by chemical process.Iron does not occur in free state but is extracted from the iron compounds that occur in mines. Washing soda is manufactured by chemical process.
So, if we want to learn all about them, then we should study chemistry.
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