Chemistry

Chemistry, 09.10.2019 13:30, isabellamason5900

The model of the atom evolved over time as scientific investigations uncovered new properties and observations about the atom. describe the function of a model in scientific investigations.

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Biology, 30.06.2019 04:30, steph76812

Describe the location of the positive charge of the atom in j. j. thomson’s plum pudding model. a) on one of the atom's two poles b) evenly distributed throughout the entire atom c) in small concentrated center location of the atom d) not located in the atom at all, but orbiting on the outside

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Chemistry, 26.07.2019 14:00, kalebrayburn62

The model of the atom where the central core contains protons and neutrons surrounded by a cloud of electrons is best described as a) the bohr model of the atom. b) the modern model of the atom. c) the plum pudding model of the atom. d) the solar system model of the atom.

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Physics, 21.08.2019 12:20, blair454

Why has the model of the atom changed over time? a. the model of the atom evolved as scientists have made new discoveries. b. the model of the atom is only correct if it is identical to the size of an atom. c. the current model of the atom is simple with exaggerated size. d. atoms are too complex and cannot be explained using a model.

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Chemistry, 13.10.2019 02:30, EnternalClipz

1)explain how different observations and experiments led to changes in the atomic model. 2)describe the properties and locations of protons, neutrons, and electrons in an atom. 3)explain what the mass number and atomic number identify about an atom. 4)use mass and atomic number to determine the number of each subatomic particle in an atom. 5)identify the differences between isotopes of an element. 6)calculate the weighted average mass of an element when given the percent abundance and mass of its isotopes. 7)describe the mole and its use in chemistry calculations. 8)use the mole, avogadro’s number, and molar mass in dimensional analysis calculations. 9)describe observations that led to the bohr and quantum models of the atom. 10)explain how line spectra are used to identify elements and what they indicate about atoms. 11)explain properties of waves and how these properties apply to the quantum model. 12)describe your observations, calculations, and conclusions from the virtual lab. 13)represent electron arrangements using electron configuration, orbital notation, shorthand notation, and lewis dot notation. 14)describe the quantum model of an atom in terms of energy levels, sublevels, and orbitals. 15)use quantum numbers to represent the locations of electrons. 16)apply the rules and limitations of each quantum number to identify possible and impossible quantum number sets.

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