History: Model of the AtomVersion en ligne Answer the questions about the history of the model of the Atom. This is a review exercise of what was done during the week. Good luck! :o) par Thays Farias Galvao 1 Aristotle stated that matter was made of 4 elements. What were those 4 elements? Written answer 2 __________ believed that compounds were combinations of atoms from different elements that could not be created or destroyed. Law of Conservation of Matter. a Democritus b John Dalton c Aristotle d JJ Thomson 3 J.J. Thomson won a Noble Prize for his discovery of __________. a Electrons b Protons c Neutrons 4 J.J.Thomson… a Believed the atom was a sphere of positive matter packed with negative electrons. b Believed that mater is composed of space. c Believed that matter contained 4 elements: earth, fire, air and wind. 5 Ernest Rutherford… a Father of the Periodic Table b Father of the Nuclear Age c Father of Chemistry 6 N. Bohr’s theory stated that (you can choose more than one option) Choose one or more answers a Electrons can jump from one level to another but don’t stop in the distances between levels. b Protons and electrons equal each other in a neutral atom. c Electrons moved around the nucleus at fixed energies and distances. 7 John Dalton said that (you can choose more than one option): Choose one or more answers a Atoms are very small. b All matter consists of indivisible particles called atoms. c Atoms of different elements may combine with each other in a fixed, simple, whole number ratios to form compound atoms. d Atoms cannot be created of destroyed. 8 Which scientist discovered the nucleus? a Neils Bohr b Ernest Rutherford c James Chadwick d J.J. Thomson 9 Which scientist proposed an atomic model in which electrons move around the nucleus in orbits arranged in energy shells? a Democritus b Ernest Rutherford c Niels Bohr d Erwin Schrodinger 10 _________________ are negatively charged particles of the atom. a Protons b Neutrons c Electrons 11 Thomson concluded that EEOLCTRSN were present in all atoms. (Unscramble the word) Written answer 12 _______________ concluded that atoms are mostly empty space. a J.J. Thomson b E. Rutherford c J. Dalton d N. Bohr 13 Which scientist discovered the electron? a J.J. Thomson b N. Bohr c E. Schrodinger d E. Rutherford 14 Which sub-atomic particle of the atom is positively charged? a Neutron b Electron c Proton 15 Which scientist hypothesized, that electrons circled the nucleus, like tiny planets in a solar system? a J.J. Thomson b E. Rutherford c N. Bohr d E. Schrodinger 16 Electrons in the cloud absorb and release energy. a True b False 17 Which of the following is NOT one of the ideas based on Dalton's theory of the Atom? a He said that all matter is made of atoms. b He said atoms of different elements are different in mass. c He said atoms of the same element are alike in mass. d He said that atoms are divisible and destructible. 18 Which Atomic model does this graphic represent? a N. Bohr’s model b J.J. Thomson’s model c E. Schrodinger’s model d E. Rutherford’s model 19 Which Atomic model does this graphic represent? a J.J. Thomson’s model b E. Schrodinger’s model c E. Rutherford’s model d J. Dalton's model 20 Which Atomic model does this graphic represent? a N. Bohr’s model b J.J. Thomson’s model c E. Schrodinger’s model d E. Rutherford’s model 21 Which Atomic model does this graphic represent? a N. Bohr’s model b J.J. Thomson’s model c E. Schrodinger’s model d E. Rutherford’s model 22 Which Atomic model does this graphic represent? a N. Bohr’s model b J.J. Thomson’s model c E. Schrodinger’s model d E. Rutherford’s model 23 Which Scientist discovered the neutron? a E. Schrodinger b J.J. Thomson c J. Chadwick d N. Bohr 24 Which is the proper order in the History of scientist who proposed theories of the atom from 1800s-present? a Thomson, Bohr, Electron Cloud, Dalton, Rutherford b Dalton, Thomson, Rutherford, Bohr, Electron Cloud c Rutherford, Electron Cloud, Dalton, Thomson d Dalton, Rutherford, Bohr, Electron Cloud, Thomson 25 Which two particles were found to be located in the nucleus? Written answer
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