(Openstax Biology 2e Textbook)
(2026/2027) Update|Exam
Questions With Multiple
Choices |Verified & Revised
Answers (New)!!!
Ifmxenonmhasmanmatomicmnumbermofm54mandmammassmnumbermofm108,mhowmmanymneutronsmdoesmi
tmhave?
54
27
100
108m-mCORRECTmANSWERm54
Atomsmthatmvaryminmthemnumbermofmneutronsmfoundminmtheirmnucleimaremcalledm________.
ions
neutrons
neutralmatoms
isotopesm-mCORRECTmANSWERmisotopes
Potassiummhasmanmatomicmnumbermofm19.mWhatmismitsmelectronmconfiguration?
shellsm1mandm2maremfull,mandmshellm3mhasmninemelectrons
shellsm1,m2mandm3maremfullmandmshellm4mhasmthreemelectrons
shellsm1,m2mandm3maremfullmandmshellm4mhasmonemelectron
shellsm1,m2mandm3maremfullmandmnomothermelectronsmarempresentm-
mCORRECTmANSWERmshellsm1,m2mandm3maremfullmandmshellm4mhasmonemelectron
,.m
Whichmtypemofmbondmrepresentsmamweakmchemicalmbond?
hydrogenmbond
atomicmbond
covalentmbond
nonpolarmcovalentmbondm-mCORRECTmANSWERmhydrogenmbond
Whichmofmthemfollowingmstatementsmismnotmtrue?
Watermismpolar.
Watermstabilizesmtemperature.
Watermismessentialmformlife.
WatermismthemmostmabundantmmoleculeminmthemEarth'smatmosphere.m-
mCORRECTmANSWERmWatermismthemmostmabundantmmoleculeminmthemEarth'smatmosphere.
Whenmacidsmaremaddedmtomamsolution,mthempHmshouldm________.
decrease
increase
staymthemsame
cannotmtellmwithoutmtestingm-mCORRECTmANSWERmdecrease
Wemcallmammoleculemthatmbindsmupmexcessmhydrogenmionsminmamsolutionma(n)m________.
acid
isotope
base
donatorm-mCORRECTmANSWERmbase
, Whichmofmthemfollowingmstatementsmismtrue?
Acidsmandmbasesmcannotmmixmtogether.
Acidsmandmbasesmwillmneutralizemeachmother.
Acids,mbutmnotmbases,mcanmchangemthempHmofmamsolution.
Acidsmdonatemhydroxidemionsm(OH-);mbasesmdonatemhydrogenmionsm(H+).m-
mCORRECTmANSWERmAcidsmandmbasesmcannotmmixmtogether.
Eachmcarbonmatommcanmbondmwithmasmmanymas________mothermatom(s)mormmolecule(s).
one
two
six
fourm-mCORRECTmANSWERmfour
.m
Whichmofmthemfollowingmismnotmamfunctionalmgroupmthatmcanmbondmwithmcarbon?
sodium
hydroxyl
phosphate
carbonylm-mCORRECTmANSWERmsodiumIonicmbonds-
Ionicmbondsm-mCORRECTmANSWERmtransfermofmelectrons
Covalentmbondsm-mCORRECTmANSWERmBondsmcreatedmbymsharingmelectronsmwithmothermatoms.
Noncovalentmbondsm-
mCORRECTmANSWERmWeakmchemicalmbondsminmwhichmnomelectronsmaremshared