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Elements,Compound and Mixture (Elements (Atoms (smallest particle of an…
Elements,Compound and Mixture
Elements
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can be metals,metalloids or non-metals
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Isotopes
The same atoms of the same element with the same no.of protons,electrons but different no.of neutrons
Chemical reactions only involve electrons but not neutrons. Hence,isotopes have the same chemical properties
Isotopes have different masses therefore, they have different physical properties
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Atomic structure
Atoms
They are made up of protons,neutrons and electrons
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Ions
When electrons are added or taken away, the no.of protons is not = to the no.electrons
No.of electrons>no.of protons, the atom is negatively charged.
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No.of elctrons<no.of protons,is the atom is positvely charged
