Grade 12 IEB Chemistry definitions
Questions And Answers
Activatedscomplexs-sCORRECTssANSWER-
ashighsenergy,sunstable,stemporarystransitionsstatesbetweensthesreactantssandsthesproduct
s.
Activationsenergys-sCORRECTssANSWER-
thesminimumsenergysrequiredstosstartsaschemicalsreactionsorsthesenergysrequiredstosformsth
esactivatedscomplex.
Amphoterics(amphiprotic)ssubstances-sCORRECTssANSWER-
assubstancesthatscansactsasseithersansacidsorsasbase.
Anodes-sCORRECTssANSWER-theselectrodeswheresoxidationstakessplace.
Catalysts-sCORRECTssANSWER-
assubstancesthatsincreasessthesratesofsthesreactionsbutsremainssunchangedsatsthesendsofsth
esreaction.
Cathodes-sCORRECTssANSWER-theselectrodesweresreductionstakessplace.
Closedssystems(inschemistry)s-sCORRECTssANSWER-
assystemsinswhichsmasssissconservedsinsidesthessystemsbutsenergyscansentersorsleavesthes
systemsfreely.
Concentrations-sCORRECTssANSWER-thesamountsofssolutespersunitsvolumesofssolution.
Covalentsbonds-sCORRECTssANSWER-
assharingsofsatsleastsonespairsofselectronssbystwosnon-metalsatoms.
Dissociations-sCORRECTssANSWER-thessplittingsofsansionicscompoundsintositssions.
Electrolytes-sCORRECTssANSWER-
assubstancesthatscansconductselectricitysbysformingsfreesionsswhensmoltensorsdissolvedsinss
olution.
Questions And Answers
Activatedscomplexs-sCORRECTssANSWER-
ashighsenergy,sunstable,stemporarystransitionsstatesbetweensthesreactantssandsthesproduct
s.
Activationsenergys-sCORRECTssANSWER-
thesminimumsenergysrequiredstosstartsaschemicalsreactionsorsthesenergysrequiredstosformsth
esactivatedscomplex.
Amphoterics(amphiprotic)ssubstances-sCORRECTssANSWER-
assubstancesthatscansactsasseithersansacidsorsasbase.
Anodes-sCORRECTssANSWER-theselectrodeswheresoxidationstakessplace.
Catalysts-sCORRECTssANSWER-
assubstancesthatsincreasessthesratesofsthesreactionsbutsremainssunchangedsatsthesendsofsth
esreaction.
Cathodes-sCORRECTssANSWER-theselectrodesweresreductionstakessplace.
Closedssystems(inschemistry)s-sCORRECTssANSWER-
assystemsinswhichsmasssissconservedsinsidesthessystemsbutsenergyscansentersorsleavesthes
systemsfreely.
Concentrations-sCORRECTssANSWER-thesamountsofssolutespersunitsvolumesofssolution.
Covalentsbonds-sCORRECTssANSWER-
assharingsofsatsleastsonespairsofselectronssbystwosnon-metalsatoms.
Dissociations-sCORRECTssANSWER-thessplittingsofsansionicscompoundsintositssions.
Electrolytes-sCORRECTssANSWER-
assubstancesthatscansconductselectricitysbysformingsfreesionsswhensmoltensorsdissolvedsinss
olution.