Key ideas- unit 1 atomic structure and the periodic table (1).docx

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4.1.1 -Atomic structure and the periodic tableTopicKey questionsAtoms, elements, andcompoundsWhat are the names of the first twenty elements?Define what is an element and a compound.Define a mixture. Describe, explain, and give examples of the different
processes of separation.
Development of themodel of the atomDescribe why the new evidence from the scattering experiment led to achange in the atomic model.Describe the difference between the plum pudding model of the atom andthe nuclear model of the atom.

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