9th Class

9th Class Science Notes

9th Class Science notes of Atomic Structure, Periodic Table of Elements, Chemical Bonding and Reactions with 9th class NCERT science solution.

1. Atomic Structure

2. Periodic Table of Elements

3. Chemical Bonding and Reactions

9th Class Science
9th Class Science

9th class science book contain three chapter of chemistry. Which are atomic structure, periodic table of elements, chemical bonding and reactions. We provide the chemistry notes of all these three chapters at above links. Class IX Science Notes provided free of cost by  ChemistryNotesInfo website www.ChemistryNotesInfo.com 

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9th Class Science

These 9th Class Science Notes of CBSE, NCERT and other Board Exams by ChemistryNotesInfo contain following topics

Atomic Structure Class 9

Atomic Structure Class 9
Atomic Structure Class 9

Dalton Atomic Theory, What is an atom?, Constituting particles of atom, Discovery of Electron, Properties of Cathode Rays, What is X-rays?, Why X-rays are used in medical sciences?, Determination of charge to mass ratio of electron (e/m), Millikan’s Oil Drop Experiment, Calculation of mass of electron, Mass of electron in comparison with atom, Discovery of Proton, Why anode rays are called as canal rays?, Properties of Anode Rays, Determination of charge to mass ratio of proton (e/m), Charge on proton, Discovery of Neutron, Dalton Atomic Model, Thomson’s atomic model, Rutherford’s atomic model, Bohr’s atomic model, Atomic Number, Mass Number, Isotopes, Types of Isotopes, Isobars, Distribution of electrons in various orbits, Bohr Bury Scheme, Valence Electrons and Valency, Radioactivity, Penetrating Power of alpha beta gamma rays, Tracer-technique of radioactive isotopes, Various fields of tracer techniques, Carbon Dating

  Periodic Table of Elements Class 9

  Periodic Table of Elements Class 9
  Periodic Table of Elements Class 9

Prout’s Hypothesis – 1815, Dobereiner’s Triads – 1829, Newland’s Law of Octaves – 1863, Lother Meyer Curves – 1869, Mendeleev’s Periodic Table – 1869, Modern Periodic Laws of Moseley -1913, Modern Periodic Table ( of 18 columns ), Periodic Properties of the Elements, Atomic Size or Atomic Radius, Ionization Energy, Electron Affinity, Metallic and Non-Metallic characters, Metalloids

Chemical Bonding and Reactions Class 9

Chemical Bonding and Reactions Class 9
Chemical Bonding and Reactions Class 9

The Chemical Bonding, Electrovalent Bond or Ionic bond and Electrovalent Compound, Characteristics of Electrovalent Compounds, Covalent Bond and Covalent Compound, Types of Covalent Bonds, Characteristics of covalent compounds, Polar Covalent Bond, Characteristics of Polar Covalent Compounds, Chemical Reactions and Chemical Formula, Formation of Compound, Simple Chemical Reaction, Balancing of Chemical Reactions, Types of Chemical Reaction

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