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- 1. Multiple Choice
Ernest Rutherford discovered that atoms were mostly _________________.negatively chargedpositively chargedelectronsempty space. - 2. Multiple ChoiceThis was the first model of the atom ever proposed. It was simple and described atoms as tiny spheres that could not be broken down into smaller pieces.Democritus's model of the atomThe "Plum Pudding Model" of the atomThe "Rutherford Model" of the atomThe "Solar System Model" of the atom
- 3. Multiple ChoiceThis model was developed after J.J. Thompson discovered electrons, a particle smaller than an atom. Is shows electrons floating freely in a positive space.The "Plum Pudding Model" of the atomThe "Rutherford Model" of the atomDemocritus's model of the atomThe "Solar System Model" of the atom
- 4. Multiple ChoicePlace the following scientists in order, from earliest to latest:
A) Ernest Rutherford
B) J.J. Thomson
C) John DaltonB,C,AC,A,BA,C,BC,B,A - 5. Multiple ChoiceWhich word would closely define the term "atomos"?IncredibleIndivisibleIndelibleIndependent
- 6. Multiple Choice
Which one of the following discoveries came first?
electrons
neutrons
quarks
atoms
- 7. Multiple Choice
Which scientist discovered the electrons?
Dalton
Thomson
Atristotle
Bohr
- 8. Multiple Choice
Rutherford and his students did experiments that showed
quark
nucleus
proton
electron
- 9. Multiple Choice
Bohr discovered that electrons are located in
the nucleus
inside protons
electron cloud
circular orbits around the nucleus
- 10. Multiple Choice
What is a particle with one negative charge called?
electron
proton
quark
neutron
- 11. Multiple Choice
The smallest particle of an element that still represents that element.
Nucleus
electron
proton
atom
- 12. Multiple Choice
What is a particle with one positive charge called?
proton
electron
neutron
quark
- 13. Multiple Choice
What is the center of an atom called?
nucleus
electron cloud
proton center
photon center
- 14. Multiple ChoiceWho was the first person to come up with the Atomic Theory?John DaltonDemocritusErnest RutherfordNiels Bohr
- 15. Multiple ChoiceWho discovered that the nucleus contains positively charged particles called protons?Ernest RutherfordJames ChadwickDemocritusNiels Bohr
- 16. Multiple Choiceall matter is made of whatenergyatomselectronscompounds
- 17. Multiple ChoiceThe central region of an atom where neutrons and protons are located is the __________________.nucleuselectron cloudcorecenter
- 18. Multiple ChoiceThe first person to ever talk about an atom wasDemocritusRutherfordDalton
- 19. Multiple ChoiceHow did Rutherford discover the proton?Cathode tube ray experimentGold Foil ExperimentPlanetary ModelPlum Pudding Model
- 20. Multiple ChoiceWho stated that all atoms of the same element are excacty alike?DemocritusDaltonThomsonBorh
- 21. Multiple ChoiceWhat scientist is best known for his "Plum Pudding" model of the atom?J.J. TomsonErnest RutherfordJohn DaltonDemocritus
- 22. Multiple ChoiceWhat contribution did John Dalton make to atomic theory?He discovered that every atom was positively charged.He discovered that every element consisted of one type of atom.He discovered that atoms had nuclei.He discovered that atoms could be divided into smaller parts.
- 23. Multiple ChoiceRutherford's gold foil experiment provided evidence that...negative and positive charges are spread evenly throughout the atom.alpha particles have a positive charge.gold is not a dense as previously thought.there is a dense positively charged nucleus at the center of an atom.
- 24. Multiple ChoiceWho came up with this model of an atom?J.J. ThompsonErnest RutherfordNeils BohrJames Chadwick
- 25. Multiple ChoiceThe majority of an atom's mass exists where?In the nucleusIn the electron cloudIn the space between the nucleus and the electronsIn the neutrons
- 26. Multiple Choice
plum pudding model of the atom
Democritus
Aristotle
J. J. Thompson
James Chadwick
John Dalton
- 27. Multiple Choice
Used the Planetary Model of atoms
Neils Bohr
Ernest Rutherford
Aristotle
James Chadwick
John Dalton
- 28. Multiple ChoiceHow did Rutherford discover the proton?Cathode tube ray experimentGold Foil ExperimentPlanetary ModelPlum Pudding Model
- 29. Multiple ChoiceWhat did Rutherford's Gold Foil experiment prove?the atom is mostly spacethe atom is denseatoms don't existatoms only consist of protons and electrons
- 30. Multiple ChoiceWhich scientist disagreed with the idea that atoms existed?DemocritusAristotleRutherford
- 31. Multiple ChoiceWhich word would closely define the term "atomos"?IncredibleIndivisibleIndelibleIndependent
- 32. Multiple ChoiceHe proposed the particle theory of matter and called nature’s most basic particle the “atomos”AristotleDemocritusChadwickMillikan
- 33. Multiple ChoiceHe believed that all matter was continuous and that four basic elements existed (earth, wind, fire, water).DemocritusAristotleChadwickThomson
- 34. Multiple ChoiceWhat scientist first developed 4 rules for atomic theory, and helped kick start modern chemistry?J.J. ThomsonErnest RutherfordJohn DaltonDemocritus
- 35. Multiple ChoiceNiels Bohr suggested that electrons.......are found in specific orbitselectrons are scattered throughout the atomelectrons move according to their energy levelelectrons are positive
- 36. Multiple ChoiceWhose model of an atom is displayed in the picture?ThomsonRutherfordDaltonBohr
- 37. Multiple ChoiceWhy has the model of an atom changed over time?Scientists discovered new information about atoms over time.Scientists couldn't agree on what the atom looked like.Atoms today are different than they were for Democritus in Greece.Atoms are always changing and may be different in the future.
- 38. Multiple ChoiceWhat is the nickname for Bohr's model?Planetary modelElectron cloud modelBilliard ball modelNuclear model
- 39. Multiple ChoiceWhose model is in the picture displayed?ThomsonDaltonModernRutherford
- 40. Multiple Choice
Who discovered the electron
Rutherford
Thomson
Millikan
Dalton
- 41. Multiple Choice
Theory of the atom believed electrons orbited the nucleus
Bohr
Thomson
Millikan
Rutherford
- 42. Multiple ChoiceThis model of the atom described atoms as tiny spheres that could not be broken down into smaller pieces.Dalton's model of the atomThe "Plum Pudding Model" of the atomThe Nuclear ModelThe Bohr Model
- 43. Multiple ChoiceWhat scientist is best known for his "Plum Pudding" model of the atom?J.J. TomsonErnest RutherfordJohn DaltonDemocritus
- 44. Multiple ChoiceWhat Greek philosopher first spoke about the idea of an atom?DemocritusDaltonThompsonRutherford
- 45. Multiple Choice
Who was responsible for the "Death of Chemistry" ?
Dalton
Aristotle
Bohr
Rutherford
- 46. Multiple Choice
Who discovered the Electron?
Thomson
Rutherford
Bohr
Democritus
- 47. Multiple Choice
Who used the Gold Foil Experiment?
Rutherford
Democritus
Aristotle
Bohr
- 48. Multiple Choice
What did the gold foil experiment find?
Atoms have a Positively Charged Nucleus
Atoms have a Negatively Charged Nucleus
Atoms do not have a Nucleus
Atoms have nothing at the centre
- 49. Multiple Choice
Which scientist thought of the atom as a tiny ball?
Rutherford
Aristotle
Dalton
Bohr
- 50. Multiple Choice
Who's model of the atom is similar to the planets in the solar system, where electrons move in specific layers?
Thomson
Bohr
Dalton
Aristotle
- 51. Multiple Choice
Who's theory concluded that the atoms of different elements are different from each other?
Dalton
Thomson
Rutherford
Bohr
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