Basic Concepts of Chemistry

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This chapter consists of knowledge about the various topics of chemistry like the SI system of units, various fundamental scientific quantities, Classification of matter, and various laws of chemistry. Matter and its nature, Dalton's atomic theory; Concept of atom, molecule, element and compound; Physical quantities and their measurements in Chemistry, precision and accuracy, significant figures, S.I. Units, dimensional analysis; Laws of chemical combination: Atomic and molecular masses, mole concept, molar mass, percentage composition, empirical and molecular formulae; Chemical equations and stoichiometry.

 -:  Topics :-

1. Chemical Classification of matter
     a. Homogenous
     b. Hetrogenous

2. Allotropy -  The phenomena of the existence of elements in two different forms.
     a. Isomorphisms
     b. Polymorphisms

3. Hygroscopic, Deliquescent, and Efflorescent.

4. SI. Units - Lenth, Mass, Time, Electric Current, Thermodynamic Temperature, Amount of                                   Substance, and Luminous intensity.

5. Rules for Determining significant figures.

6. Laws of chemical combination-
      a. Conservation of mass.
      b. Law of definite proportion.
      c. Law of multiple proportions.
      d. Law of reciprocal proportions.
      e. Gay-Lussac's Law of gaseous volumes
7. Dalton's atomic theory.

8. Modern Atomic theory.

9. Avogadro's hypothesis.

10. Solution.
Are you one of those who loves Chemistry? That’s great! But even if you are not, you must know some basic concepts of Chemistry. I’m sure after learning these, you might become a fan of Chemistry.

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Techzist | Jee Main 2021 study material download PDF

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