History, Atomic Theory, And Atoms Review Packet

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History, Atomic Theory, and Atoms Review PacketHW: Due Wednesday, November 22ndNameDate PeriodAtomic TheoryFill in the missing information in the chart below:Name of ResearcherEquipment/ExperimentN/ASketch of ModelMajor Idea/DiscoveryAll atoms of a givenelement are identical inmass and propertiesThomsonRutherfordN/AN/AElectrons travel around thenucleus in welldefinedpaths called orbits (likeplanets in a solar system)Electrons have distinctamounts of energy andmove in areas calledorbitalsDeveloped after the famousdiscovery that energy canbehave as both waves &particles

Collegiate Institute for Math and ScienceDay 45: November 21, 2016Ms. KhanisRoom 427

Collegiate Institute for Math and ScienceDay 45: November 21, 2016Ms. KhanisRoom 427

Collegiate Institute for Math and ScienceDay 45: November 21, 2016Ms. KhanisRoom 427Atomic Structure Worksheet**Assume all are neutral atoms!Fill in the blanks in the following worksheet. Please keep in mind that the isotope represented by each spacemay NOT be the most common isotope or the one closest in atomic mass to the value on the periodic 43278320990142Md259Se804051Notice there are two different atoms of zirconium (Zr) listed. These differentversions are called ISOTOPES. What one subatomic particle is different fromone isotope to the other?

Collegiate Institute for Math and ScienceDay 45: November 21, 2016Ms. KhanisRoom 427Atomic Theory- Neutral Atoms and their subatomic parts**IMPORTANT**If the mass number is not given to you, round the atomicmass that you find on the Periodic Table for that element.How many protons, neutrons, and electrons are presentin the following neutral atoms?vanadiumP N e potassiumnitrogenplatinumargonheliumWhat is the name of the element that has neutral atoms that contain:5 protons?16 electrons?17 protons?25 protons?82 protons?92 protons?32 electrons?1 electron?8 electrons?2 electrons?

Collegiate Institute for Math and ScienceMs. KhanisDay 45: November 21, 2016Room 427Complete the following chart: (assume the overall charge on all atoms 0 .except the last one!)ElementSymbolAtomicNumber# ofProtonsHydrogen# iumIon# ofElectronsLi 2737

Collegiate Institute for Math and ScienceDay 45: November 21, 2016Calculate the atomic mass of each of the following isotopes. SHOW ALL WORK.Ms. KhanisRoom 427ElementMassPercent Abundance1)copper-63copper-6562.9396 amu64.9278 amu69.17%30.83%2)uranium-235uranium-238235.0439 amu238.0510 amu0.72%99.28%3)hydrogen-1hydrogen-21.0078 amu2.0140 amu4)element Q-8 8.0 amu 10.0% element Q-9 9.0 amu 20.0% element Q-10 10.0 amu70.0%99.985%0.015%Weighted Averages (SHOW ALL WORK!)*You can round the masses given to you or use them as given – just be consistent!1) Element X exists in three isotopic forms. The isotopic mixture consists of 10.0% 10X,20.0% 11X, and 70.0% 12X. What is the average atomic mass of this element?

Collegiate Institute for Math and ScienceDay 45: November 21, 2016Ms. KhanisRoom 4272) Element Y exists in three isotopic forms. The Isotopic mixture consists of 15.0% 21X,65.0% 22X, and 20.0% 23X. That is the average atomic mass of this element?3) A mystery element occurs in nature as two isotopes. Isotope A has a mass of 10.0130 amu and itsabundance is 19.9%; Isotope B has a mass of 11.0093 amu and its abundance is 80.1%. From thisdata, calculate the atomic mass of the element and show all work. Lastly, identify the element.4) A mystery element occurs in nature as two isotopes. Isotope A has a mass of62.939598 amu and its abundance is 69.17%; Isotope B has a mass of 64.927793 amu and itsabundance is 30.83%. From this data, calculate the atomic mass of the element and show all work.Lastly, identify the element.5) A mystery element occurs in nature as three isotopes. Isotope A has a mass of15.994915 amu and its abundance is 99.762%; Isotope B has a mass of 16.999132 amu and itsabundance is 0.0380%; Isotope C has a mass of 17.999160 amu and its abundance is 0.2000%.From this data, calculate the atomic mass of the element and show all work. Lastly, identify theelement.Isotopes and Average Atomic MassExample: A sample of cesium is 75% 133Cs, 20% 132Cs, and 5% 134Cs. What is the averageatomic mass?

Collegiate Institute for Math and ScienceDay 45: November 21, 2016Determine the average atomic mass of the following mixtures of isotopes.1. 80% 127I, 17% 126I, 3% 128I2. 50% 197Au, 50% 198Au3. 15% 55Fe, 85% 56Fe4. 99% 1H, 0.8% 2H, 0.2% 3H5. 95% 14N, 3% 15N, 2% 16NMs. KhanisRoom 427

Collegiate Institute for Math and ScienceDay 45: November 21, 2016Ms. KhanisRoom 427Construct Bohr diagrams for the following:Naelectron configurationFelectron configurationLi electron configurationelectron configurationOelectron configurationCl-Neelectron configuration

Collegiate Institute for Math and ScienceDay 45: November 21, 2016Ms. KhanisRoom 427

Collegiate Institute for Math and ScienceDay 45: November 21, 2016Ms. KhanisRoom 427Draw Lewis Dot Diagrams for the following:Bohr and Lewis Dot DiagramsElementElectron ConfigurationBohr DiagramCarbonp n e Oxygenp n e Sodiump n e Neonp n e 13. Give the ground state electron configuration for calcium.14. How many principal (orbital levels) energy levels are there in a iron atom?

Atomic Structure Worksheet **Assume all are neutral atoms! Fill in the blanks in the following worksheet. Please keep in mind that the isotope represented by each space may NOT be the most common isotope or the one closest in atomic mass to the value on the periodic table. Atomic symbol Atomic number Protons Neutrons Electrons Mass number

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