Class XI Chapter 1 Some Basic Concepts of Chemistry
Chemistry is the scientific study of the properties and behaviour of matter. It is the science of molecules and their transformation. It is an important part of our life. The formation of curd from milk, rusting of iron, and the formation of vinegar from sugarcane juice are some examples of changes in the chemical and physical properties of matter.
Below are the study notes of Chapter 1 of Class XI which are familiar to ICSE and CBSE. Every effort is taken to cover each and every single topic of the chapter, so as to make it convenient for the students.
The branch of science that deals with the preparation, properties, structure and chemical reactions of the different matter is known as chemistry. Matter is made of atoms and molecules so we can say that chemistry is the science of atoms and molecules.
Chemistry is an important branch of science, it plays a key role in various areas like weather patterns, production of acid, alkalis, fertilizers, salt, dyes, polymers, medicines, detergents, metal alloys, etc.
Chemistry provides the extraction of life-saving drugs from natural sources. Cisplatin and taxol are used for cancer therapy. AZT (Azidothymidine) is used for AIDS treatment.
A developing country like India needs a good chemist who can accept challenges like global warming, climate change and scarcity of natural resources like petrol, diesel, etc. To become a good chemist, one needs to understand the basic concept of chemistry.
Content
Importance of Chemistry
Nature of Matter
Properties of Matter and their Measurement
Uncertainty in Measurement
Laws of Chemical Combinations
Dalton’s Atomic Theory
Atomic and Molecular Masses
Mole Concept and Molar Masses
Percentage Composition
Stoichiometry and Stoichiometric Calculations
Class XI Chapter 1 Some Basic Concepts of Chemistry (1)
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