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Exam (elaborations)

ACS EXAM IN GENERAL CHEMISTRY COVERING CHEM 201-202 EXAM QUESTIONS AND ACTUAL

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ACS EXAM IN GENERAL CHEMISTRY COVERING CHEM 201-202 EXAM QUESTIONS AND ACTUAL

Institution
ACS Chemistry General
Course
ACS Chemistry General









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Institution
ACS Chemistry General
Course
ACS Chemistry General

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Uploaded on
November 8, 2025
Number of pages
12
Written in
2025/2026
Type
Exam (elaborations)
Contains
Questions & answers

Subjects

  • acs exam in general chemistry covering chem 201 20

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ACS EXAM IN GENERAL CHEMISTRY COVERING
CHEM 201/202 EXAM QUESTIONS AND ACTUAL
ANSWERS
AtomicBnumberB(Z)B-BCORRECTBANSWERS-numberBofBprotonsBthatBanBatomBhasBinBnucleusB

-uniqueBtoBeachBtypeBofBelement

-elementBisBsubstanceBwhoseBatomsBallBcontainBidenticalBnumberBofBprotons

-BZ=B#Bprotons



IsotopeB(definition)B-BCORRECTBANSWERS-atomsBofBsameBelementBwithBdifferentBmassesB

-sameBnumberBofBprotons,BdifferentBnumberBofBneutrons



IsotopeBmassBnumberB(A)B-BCORRECTBANSWERS-BA=B(#protons)+(#neutrons)

-BA=Z+N

-forBchargeBneutrality,BnumberBofBelectronsBandBprotonsBmustBbeBequal



AtomicBSymbolsB-BCORRECTBANSWERS-summarizeBinformationBaboutBsubatomicBparticlesB

-everyBisotopeBisBdefinedBbyB2BnumbersB(ZBandBA)



IsotopesB-BCORRECTBANSWERS-mostBelementsBareBmixturesBofB2BorBmoreBstableBisotopes

-eachBisotopeBhasBslightlyBdifferentBmassB

-distinguishedBbyBmassBnumberB(A);BsameBatomicBnumber,BdifferentBmassBnumber



AverageBatomicBmassB-BCORRECTBANSWERS-
calculatedBbyBsummingBtheBmassesBofBtheBelement'sBisotopes,BeachBmultipliedBbyBitsBnaturalBabu
ndanceBonBEarth

, RadioactivityB-BCORRECTBANSWERSspontaneousBdecompositionBofBtheBnucleusBofBsomeBisotopes



CommonBisotopesBofBhydrogenB-BCORRECTBANSWERS-protiumB(1/1BH)

-deuteriumB(2/1BH)

-tritiumB(3/1BH)



NuclearBradiationB-
BCORRECTBANSWERSradiation BemittedBfromBaBnucleusBduringBnuclearBdecomposition




AlphaBparticleB(4/2BHe)B-BCORRECTBANSWERS-
aBheliumBnucleus,BcontainsBtwoBprotonsBandBtwoBneutrons

-massBofB4Bamu

-atomicBnumberB2

-chargeBofB+2



BetaBparticleB(0/-1Be)B-BCORRECTBANSWERS-anBelectron

-chargeBofB-1

-massBofB0.00055Bamu



PositronB(0/1Be)B-BCORRECTBANSWERS-massBofBanBelectronB(0.00055Bamu)

-chargeBofB+1



GammaBrayB(0/0BY)B-BCORRECTBANSWERS-highBenergyBelectromagneticBradiation

-noBeffectiveBchargeBorBmass



NeutronB(1/0Bn)B-BCORRECTBANSWERS-chargeBofBzero
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