01 WS01 Chemical Foundations Chapter 1 - Zumdahl Chemistry-Atoms First.docx

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Worksheet 01: Atoms, Molecules and Ions (Chapter 1; Zumdahl. Chemistry Atoms First)Topics covered in this worksheet:atomic structure basics, symbolism, isotopes, the periodic table, naming of compounds,the concept of mole, atomic and molecular mass.Symbol to represent isotope;Where, A = Mass number = # Protons + # Neutronsand Z = Atomic Number = # Protons1.Using the Periodic Table, fill in the missing information in the chart, below.Symbolatomic massprotonsneutronselectronschargeW18474110722+Br803545350Au19779118781+Te1285276542-2.For each of the numbered species that is a neutral atom, represent its composition in the formWhich of these species are isotopes?Explain why?Z#1#2#3#4#5#6#7protons16201918202220neutrons18202122242628electrons18201817182220#1:3416S2-#2:4020Ca#3:4019S1+#4:4018Ar1+#5:4420Ca2+#6:4822Ti#7:4820Ca-#2, #4, & #7 are isotopes because they are the same element, Ca, and have the same number of protons but a differentnumber of neutrons.XAZXA

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Term
Fall
Professor
HUMMEL
Tags
Atom, Atomic Number, Chemical element, Isotope

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