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All Textbook Solutions for Chemistry: Matter and Change
107A1STP2STP3STP4STP5STP6STP7STP8STP9STP10STP11STP12STP13STP14STP15STP16STP17STP18STP19STP1SSC2SSC3SSC4SSC5PP6PP7PP8PP9PP10SSC11SSC12SSC13SSC14SSC15SSC16SSC17SSC18SSC19PP20PP21PP22PP23PP24SSC25SSC26SSC27SSC28SSC29SSC30SSC30AWhose work is credited with being the beginning of modern atomic theory?32A33A34A35AState the main points of Dalton’s atomic theory usingyour own words. Which parts of Dalton’s theory werelater found to be erronous? Explain why.37A38AWhat particles are found in the nucleus of an atom? What is the charge of the nucleus?How was the overall charge distributed in the plum pudding model?How did the charge distribution in the plum pudding model affect alpha particles passing through an atom?Label the subatomic particles shown in Figure 4.22.Arrange the following subatomic particles in order of increasing mass: neutron, electron, and proton.Explain why atoms are electrically neutral.What is the charge of the nucleus of element 89?Which particles account for most of an atom’s mass?47A48A49A50A51A52A53A54A55A56A57AHow do isotopes of a given element differ? How are they similar?How is an atom’s atomic number related to its number ofprotons? To its number of electrons?How is the mass number related to the number of protons and neutrons an atom has?How can you determine the number of neutrons in an atom if its mass number and its atomic number are known.62AStandard Units Define the atomic mass unit. What were the benefits of developing the atomic mass unit as a standard unit of mass?64A65AHow many protons and electrons are contained in an atom of element 44?Carbon A carbon atom has a mass number of 12 and an atomic number of 6. How many neutrons does it have?Mercury An isotope of mercury has 80 protons and 120 neutrons. What is the mass number of this isotope?Xenon An isotope of xenon has an atomic number of 54 and contains 77 neutrons. What is the xenon isotope’s mass number?If an atom has 18 electrons, how many protons does it have?Sulfur Show that the atomic mass of the element sulfur is 32.065 amu.72AHow many electrons, protons, and neutrons arecontained in each atom? a. 55132Cs c. 69163Tm b. 2759Cod. 3070ZnHow many electrons, protons, and neutrons are contained in each atom? a. gallium-69 c. titanium-48 b. fluorine-23 d. tantalum-18175A76A77A78A79A80A81A82A83A84A85A86A87A88A89A90A91A92A93A94A95A96A97A98A99A100A101A102A103A104A105A106A107A108A109A110A111A112A113A114A115A116A117A118A120A121A122A123A124A125A126A127A128A129A1STP2STP3STP4STP5STP6STP7STP8STP9STP10STP11STP12STP13STP14STP15STP16STP17STP18STP19STP20STP21STP1SSC2SSC3SSC4SSC5SSC6SSC7SSC8SSC9SSC10SSC11SSC12PP13PP14PP15PP16PP17PP18PP19PP20SSC21SSC22SSC23SSC24SSC25SSC26SSC27SSC28SSC29SSC34A35A36A37A38A39A40A41A42A43A44A45A46A47A48A49A50A51A52A53A54A55A56A57A58AAccording to the Bohr model, how do electrons movein atoms?60AWhat is the difference between an atom’s ground state and an excited state?62A63A64A65A66A67A68A69A70A71A72A73A74A75A76A77A78A79A80AHow many electrons are shown in each element’s electron-dot structure? a. carbon c. calcium b. iodine d. gallium82A83A84A85A86A87A88A89A90A91A92A93A94A95A96A97A98A99A100A101A102A103A104A105A106A107A108A109A110A111A112A113A114A115A116A117A118A119A1STP2STP3STP4STP5STP6STP7STP8STP9STP10STP11STP12STP13STP14STP15STP