multi media presentation through power point keerthi
TRANSCRIPT
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MULTI MEDIA PRESENTATION THROUGH POWER POINT
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NAME:KEERTHI VIJAYAN REG.NO:13982008 OPTION: PHYSICAL SCIENCE
SUBMITTED TO :JISHA
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STRUCTURE OF AN ATOM
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JOHN DALTON’S POSTULATES ON AN ATOM
. All matter is made up of small particles called atoms
. Atoms is the smallest particle which can engage in a chemical reaction
. Atoms of different elements have same properties
. All the atom of an element have the same properties. That is, they have the same mass,size, and character
. Atoms can neither be created nor be destroyed
.Atoms are indivisible
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INFERENCES ARRIVED BY SIR.J.J.THIMPSON
.The cause of the glow is the invisible rays emitted from the negative metal plate
.It is the flow of particles with negative charge
.There are particles carrying negative charge in all substances
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GOLD FOIL EXPERIMENT
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INFERENCE FROM GOLD FOIL EXPERIMENT.Atom has a central part, called Nucleus.Nucleus has positive charge.The mass of an atom is concentrated in the nucleus.Electrons are distributed in the space around the
nucleus
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RUTHERFORD ATOM MODEL
RUTHERFORD ATOM MODEL
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Atom has a central part called NUCLEUS Nucleus has positive charge Negatively charge electrons are revolving
around the nucleus The path of electron called ORBIT
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COMPARER RUTHERFORD ATOM MODEL WITH SOLAR SYSTEM
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THANK YOU