Charged Particles in Matter
If we rub a comb in dry hair,then this comb attracts small pieces of paper.And if we rub a glass rod with a piece of silk cloth and bring it near an inflated balloon,then the glass rod attracts the balloon.We know that an electrically charged object can attract an uncharged object. This means that on rubbing with dry hair,a comb gets an electric charge, and on rubbing with silk cloth,a glass rod also gets an electric charge.Now,the question arises :Where does this electric charge come from ? The obvious answer is : from within the atoms present in the comb and glass rod.These simple experiments tell us that some charged particles are present in the atoms of matter.So,the atom is divisible.
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Structure of the Atom - Notes
1. Drawback of Rutherford’s Model of the Atom
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2. Rutherford’s Experiment - Discovery of Nucleus
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3. For the symbols H, D and T,tabulate three sub-atomic particles found in each of them.
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5. Structure of The Atom - Study Points
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10. Arrangement Of Electrons In The Atoms
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13. Limitations of Rutherford's model of the atom
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15. All about Names of the Chemical Elements
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17. How to learn naming Chemical Formulae?
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20. Comparison between Proton, Neutron and Electron
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21. Electronic Configurations of First 20 Elements
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26. Rules for writing of distribution of electrons in various shells for the first 18 elements
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36. The Physical Properties of the Isotopes of an Element are Different
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39. All the Isotopes of an Element Have Identical Chemical Properties
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42. Relationship Between Mass Number and Atomic Number
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44. Valaence Electrons (Or Valancy Electrons)
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45. Electronic Configurations of Noble Gases (or Inert Gases)
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48. Reason for the Fractional Atomic Masses of Elements
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49. Applications of Radioactive Isotopes
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50. Relation Between Valency and Valence Electrons
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