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Atomic Structure - Coggle Diagram
Atomic Structure
First 20 elements
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9.Fluorine(F)
10.Neon(Ne)
11.Sodium(Na)
12.Magnesium(Mg)
13.Aluminum(Al)
14.Silicon(Si)
15.Phosphorus(P)
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Seperation techniques
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Solid forms, atoms/molecules organized. Formed from solution
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Element = pure substance
Compound = two or more elements, held by chemical bonds
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Model of atom
Dalton, all matter particles called atoms, tiny solid balls, cannot be broken, during chem reaction atoms make dif substances.
Thompson, found electron, atoms neutrol in plum pudding model, atoms spheres of positive charge, electrons dotted round inside
Geiger/Mardsen, tested plum, beams of positive particles at thin gold foil, should go through, many changed direction, rutherford explained in planetary model (atoms have central positively charged nucleus with most mass, electrons orbit nucleus
Bohr, electron shells and energy levels round nucleus
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