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- 1. Multiple ChoiceWho was the first person to study atomic theory?DaltonDemocritusChadwickMiller
- 2. Multiple ChoiceTrue or False? John Dalton believed that moving electrons exist in electron clouds around the nucleus.FalseTrue
- 3. Multiple ChoiceWhat was the name of J.J Thomsons' model of atomic structure.Electron Cloud ModelElectron Sea ModelPlum Pudding ModelBohr Model
- 4. Multiple ChoiceWho proposed the idea that electrons are not fixed but constantly move?DaltonBohrSchrodingerChadwick
- 5. Multiple ChoiceWhat was James Chadwicks most notable discovery?The nucleus contains protons.The nucleus contains neutrons.Electron are not fixed.Protons are positive.
- 6. Multiple ChoiceWhat does the Bohr model suggest?Atoms are small, hard, indivisible objects.That protons in the nucleus are attracted to electrons in the electron clouds.That electrons travel around the nucleus of an atom in orbits or definite paths.
- 7. Multiple ChoiceWas John Daltons theory earlier than Niels Bohr?NoYes
- 8. Multiple ChoiceWho proposed that the atom consists mostly of empty space?BohrDaltonRutherfordChadwick
- 9. Multiple ChoiceWhich name is incorrect?Ernest RutherfordNiels BohrJames DoltonJ.J Thomson
- 10. Multiple ChoiceWhich model suggested that: Atoms mostly consist of positively charged material with negatively charged particles (electrons) located throughout the positive material.Bohrs ModelPlum Pudding ModelDemocritus ModelOur current model
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