WGU C165 Section 2 Chemistry: Lesson
1-3 Questions with Correct Answers
2026
Describe ethe egeneral estructure eof ean eatom. e- eCORRECT eANSWER e-
The egeneral estructure eof ean eatom econsists eof ethree emain ecomponents:
Nucleus
Electron eCloud
Electron eShells
Describe ethe egeneral estructure eof ean eatom.
Nucleus: e- eCORRECT eANSWER e-Nucleus:
o Description: eThe edense, ecentral epart eof ethe eatom.
o Components: eComposed eof eprotons, ewhich eare epositively echarged, eand eneutrons,
ewhich ehave eno echarge. eThe enucleus econtains emost eof ethe eatom's emass.
Describe ethe egeneral estructure eof ean eatom.
Electron eCloud: e- eCORRECT eANSWER e-Electron eCloud:
o Description: eThe eregion esurrounding ethe enucleus ewhere eelectrons eare efound.
, o Components: eElectrons eare enegatively echarged eparticles ethat emove erapidly ein eorbitals
eor eener egy elevels earound ethe enucleus. eThe earrangement eof ethese eelectrons edetermines
ethe eatom's echem eical eproperties.
Describe ethe egeneral estructure eof ean eatom. e- eCORRECT eANSWER e-Electron eShells:
o Description: eSpecific eenergy elevels eor e"shells" ethat esurround ethe enucleus eand ewhere
eelectrons eare elocated.
o Components: eElectrons eoccupy ethese eshells ebased eon etheir eenergy, ewith eeach eshell
ehaving ea emaximum ecapacity efor eelectrons.
sumarize ethe egeneral estructure eof ean eatom. e- eCORRECT eANSWER e-
In esummary, ean eatom ehas ea ecentral enucleus emade eof eprotons eand eneutrons,
esurrounded eby ea ecl eoud eof eelectrons earranged ein eshells eor eenergy elevels.
atom: e- eCORRECT eANSWER e-
the ebasic ebuilding eblocks eof ematter econsisting eof ea enucleus e(made eof eprotons eand
eneutrons), ean ed eelectrons esurrounding ethe enucleus; esmall eparticles ethat emake eup eall
ematter
electron: e- eCORRECT eANSWER e-
a enegatively echarged esubatomic eparticle efound eoutside eof ethe enucleus
energy: e- eCORRECT eANSWER e-the ecapacity eto ecause echange eor edo ework
mass: e- eCORRECT eANSWER e-a emeasure eof ehow emuch ematter ean eobject ehas
matter: e- eCORRECT eANSWER e-anything ethat etakes eup espace eand ehas emass
1-3 Questions with Correct Answers
2026
Describe ethe egeneral estructure eof ean eatom. e- eCORRECT eANSWER e-
The egeneral estructure eof ean eatom econsists eof ethree emain ecomponents:
Nucleus
Electron eCloud
Electron eShells
Describe ethe egeneral estructure eof ean eatom.
Nucleus: e- eCORRECT eANSWER e-Nucleus:
o Description: eThe edense, ecentral epart eof ethe eatom.
o Components: eComposed eof eprotons, ewhich eare epositively echarged, eand eneutrons,
ewhich ehave eno echarge. eThe enucleus econtains emost eof ethe eatom's emass.
Describe ethe egeneral estructure eof ean eatom.
Electron eCloud: e- eCORRECT eANSWER e-Electron eCloud:
o Description: eThe eregion esurrounding ethe enucleus ewhere eelectrons eare efound.
, o Components: eElectrons eare enegatively echarged eparticles ethat emove erapidly ein eorbitals
eor eener egy elevels earound ethe enucleus. eThe earrangement eof ethese eelectrons edetermines
ethe eatom's echem eical eproperties.
Describe ethe egeneral estructure eof ean eatom. e- eCORRECT eANSWER e-Electron eShells:
o Description: eSpecific eenergy elevels eor e"shells" ethat esurround ethe enucleus eand ewhere
eelectrons eare elocated.
o Components: eElectrons eoccupy ethese eshells ebased eon etheir eenergy, ewith eeach eshell
ehaving ea emaximum ecapacity efor eelectrons.
sumarize ethe egeneral estructure eof ean eatom. e- eCORRECT eANSWER e-
In esummary, ean eatom ehas ea ecentral enucleus emade eof eprotons eand eneutrons,
esurrounded eby ea ecl eoud eof eelectrons earranged ein eshells eor eenergy elevels.
atom: e- eCORRECT eANSWER e-
the ebasic ebuilding eblocks eof ematter econsisting eof ea enucleus e(made eof eprotons eand
eneutrons), ean ed eelectrons esurrounding ethe enucleus; esmall eparticles ethat emake eup eall
ematter
electron: e- eCORRECT eANSWER e-
a enegatively echarged esubatomic eparticle efound eoutside eof ethe enucleus
energy: e- eCORRECT eANSWER e-the ecapacity eto ecause echange eor edo ework
mass: e- eCORRECT eANSWER e-a emeasure eof ehow emuch ematter ean eobject ehas
matter: e- eCORRECT eANSWER e-anything ethat etakes eup espace eand ehas emass
