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Chapter 2 Review Atomic Structure Aristotle named atoms atoms. A. True B. False In a neutral atom, the number of protons is equal to the number of neutrons. A. True B. False Isotopes are forms of an element that have the same number of protons but a different number of electrons. A. True B. False The mass of a neutron is approximately equal to the mass of a proton. A. True B. False A proton is a subatomic particle carrying a charge equal to but opposite that of an electron. A. True B. False In the visible light spectrum, red light has a greater frequency than violet light. A. True B. False An element can be identified by the characteristic bright-line atomic emission spectrum it can produce. A. True B. False The only subatomic particle that does not carry an electric charge is the _____. A. proton B.neutron C.electron D.nucleus The atomic number of an element whose atoms have 9 protons and 10 neutrons is _____. A.9 B.19 C.10 D.18 The mass number of an element whose atoms have 12 protons and 13 neutrons is _____. A.12 B.25 C.13 D.12.5 One isotope of carbon has 6 protons and 6 neutrons. The number of protons and neutrons of a second isotope of carbon would be _____. A.7 and 6 B. 7 and 7 C. 6 and 7 D.6 and 6 Which of the following statements is not a main point of Dalton's atomic theory? • • • • A.All matter is made up of atoms. B.Atoms are made up of smaller particles. C.Atoms are indestructible. D.All atoms of one element are exactly alike, but they are different from atoms of other elements. J.J. Thomson used a cathode ray to discover the _____. • • • • A.atom B. proton C.electron D.neutron Iodine-131 and iodine-127 are examples of _____. • • • • A.nuclei B.isotopes C.isomers D.neutrons The discovery of isotopes led to the discovery of _____. • • • • A.atoms B.protons C.electrons D.neutrons The experimentation of _____ led to the theory that the atom is a sphere of mostly empty space, with a positively charged nucleus with electrons around it. • • • • A.Bohr B.Rutherford C.Nagaoka D.Thomson Which of the following are definitely atoms of the same element A. B. C. D. 3 protons, 3 neutrons and 3 protons, 4 neutrons 3 protons, 3 neutrons and 4 protons, 4 neutrons 4 protons, 4 neutrons and 3 protons, 4 neutrons 3 protons, 4 neutrons and 4 protons, 3 neutrons The _____ is where the electron is most likely to be found. • • • • A.energy level B.electron cloud C.electron orbit D.orbit The atomic number of chlorine is 17. How many valence electrons does an atom of chlorine have? • • • • A.2 B. 8 C. 7 D.17 In a Lewis dot diagram, the dots represent _____ in the atom. • • • • A. all the electrons B. the protons C. the valence electrons D. the neutrons Which scientist developed the model of the atom shown? • • • • A. Chadwick B. Rutherford C. Thomson D. Bohr Which scientist developed the model of the atom shown? • • • • A. Chadwick B. Rutherford C. Thomson D. Bohr Which has a charge of +1? • • • • A. proton B. electron C. atom D. neutron Which one(s) have a mass of 1 amu? • • • • A. electron B. proton and neutron C. proton D. electron and proton According to the modern concept of the atom, which are located in the nucleus • • • • A. electrons and protons B. neutrons and electrons C. protons only D. protons and neutrons Which diagram shows a wave with the highest frequency? • • • • A. B. C. D. A B C D Isotopes have the same atomic number but a different number of ____. A. B. C. D. Protons Neutrons Electrons Atoms All atoms of the same element have the same ___________. • • • • A. Number of protons B. Number of neutrons C. Number of electrons D. Mass Number Ions have the same atomic number but different number of ______ A. B. C. D. Protons Neutrons Electrons Atoms How will you prepare for this test? A. Review my notes B. Use my study guide C. Review this game from Mrs. Ricafort’s website D. All of the above