Question

1) Which statement concerning the structure of the atom is correct A) Protons and Neutrons have most of the mass and occupy C) Electron have most of the mass and occupy very little of the volume of the atom B) Electron have most of the mass and occupy most of the volume of the atom most of the volwne of D) Protons and Neutrons have most of the mass but occupy very little of the volume of the atom 2) Which of the following is a part of Dalton's atomic theory? A) Atoms are rearranged but not changed during a chemical reaction. B) Atoms break down during radioactive decay C) Atoms contain protons, neutrons, and electrons. D) Isotopes of the same element have different masses. 3) The specific heat of copper is 0.385 J/(g C). If 34.2 g of copper, initially at 25 C, absorbs 4.689 kJ, what will be the final temperature of the copper? A) 25.4℃ B) 27.8℃ C) 356°C D)381°C 4) A proton is approximately A) 200 times larger than an electron. B) 2000 times larger than an electron. C) 200 times smaller than an electron. D) 2000 times smaller than an electron. 5) Which are isotopes? An atom that has an atomic number of 34 and a mass number of 76 is an isotope of an atom that has A) an atomic number of 32 and a mass number of 76. B) an atomic number of 34 and a mass number of 80. C) 42 neutrons and 34 protons. D) 42 protons and 34 neutrons 6) How many protons (p), neutrons (n), and electrons (e) are in one atom of 12 Mg? A) 12 p, 12 n, 12 e B) 12 p, 11 n, 12 e C) 12 p, 11 n, 10 e D) 12 p, 11 n, 14e

Answer 1

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