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Atoms and Molecules - Coggle Diagram
Atoms and Molecules
Concepts in chapter
Atom - Demokritus & Leucippus
Atomic Mass
Relative Atomic mass
Mole concept
Molar mass
Isobar, Isotope, Isotone, Alotropes
Elctron Distribution
Valency
Quantam Physical Model
Quantam theory
Ions
Postulates of Dalton Atomic Theory
matter made up of tiny indivisible particle - atom
atom can neither be created nor destroyed
atom cannot be further divided into smaller particles
chemical reactions - atom can be combined,rearranged or separated
Drawbacks
does not define subatomic particles
does not define isotypes, isobars and allotropes
element need not combine in whole number
Models of atom
Dalton
Thomson's
Rutherfords
Bhors
Schrodinger
Laws
Law of conversation of mass - Lavoiser
Law of constant proportion - Proust
Law of Multiple proportion - Dalton
Subatomic particle
Proton
1.6*10^-19 coulomb
1.6*10^-27 kg
Goldstien
Electron
-1.6*10^-19 coulomb
9.1*10^-32 kg
JJ Thompson - cathode ray tube
Neutron
1.6 * 10^-19 coulomb
No charge
chadwick