Chem 1070 1st Edition Lecture 6 Outline of Last Lecture II. Prefix MultipliersIII. Mass, Volume and DensityIV. EnergyV. TemperatureOutline of Current Lecture VI. Atomic Theory VII. Nuclear Model of an AtomVIII.Properties of Protons, Neutrons and ElectronsIX. Periodic TableCurrent LectureAtomic TheoryThe most commonly known Atomic Theory was composed by John Dalton in 1808. His theory has three parts. First, Each element is composed of tiny indestructible particles called atoms. Second, All atoms of a given element have the same mass and other properties that distinguish them from the atoms of other elements. Finally, atoms combine in simple whole number ratios to form compounds.Nuclear Model of an AtomMost of all atomic mass and positive charges are in the nucleus of an atom. Most of the volume is empty space with tiny negative electrons dispersed about. If an atom is neutral it means it has the same amount of positive charges in the nucleus as electrons floating about. The current accepted form of an atom is the Quantum Mechanical Model.Properties of Protons, Neutrons and ElectronsProtons: Mass(kg): 1.67262*10^-27, Mass(amu):1.0073, Charge: 1+Neutron: Mass(kg): 1.67493*10^-27, Mass(amu):1.0087, Charge:0Electron: Mass(kg): 0.00091*10^-27, Mass(amu):0.00055, Charge 1-These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Opposite charges attract one another, like charges repel each other.Periodic TableMendeleev has 66 elements that he arranged into a table that became our first periodic table in1869. He left gaps and made predictions about the future elements that would be discovered. Currently there are 91 natural elements and 20
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