CHEM 101 - EXAM -1 STUDY GUIDE (CH. 1-3) QUESTIONS WITH CORRECT ANSWERS

CHEM 101 - EXAM #1 STUDY GUIDE (CH.
ee ee ee ee ee ee ee




1-3) QUESTIONS WITH CORRECT
ee ee ee




ANSWERS ee




chemistry ee- eeCORRECT eeANSWER ee-the eestudy eeof eematter eeand eethe eechanges eeit eeundergoes



scientific eemethod ee- eeCORRECT eeANSWER ee-a eesystematic eeapproach eeto eeresearch



qualitative eedata ee- eeCORRECT eeANSWER ee-general eeobservations



quantitative eedata ee- eeCORRECT eeANSWER ee-comprising eeof eenumbers eeobtained eeby eemeasurement



hypothesis ee- eeCORRECT eeANSWER ee-a eetentative eeexplanation eefor eea eeset eeof eeobservations



law ee- eeCORRECT eeANSWER ee-a eemathematical eerelationship eethatBis eeconsistently eefound eeto eebe eetrue



theory ee- eeCORRECT eeANSWER ee-
a eegeneral eeprinciple eeor eebody eeof eeprinciples eethat eehas eebeen eedeveloped eeto eeexplain eea eewide
eevariety eeof eeph eeenomena ee(this eeis eeNOT eea eewild eeguess)




two eemajor eegoals eeof eescience ee- eeCORRECT eeANSWER ee-prediction eeand eecontrol



two ee"better" eegoals eeof eescience ee- eeCORRECT eeANSWER ee-understanding eeand eeexplanation



four eebasic eerules eeof eegood eescience ee- eeCORRECT eeANSWER ee-1. eeresults eeshould eebe eereproducible
eeby eeothers



2. detailed eeresearch eeresults eeshould eebe eereviewable

,3. conclusions eeshould eebe eereasonable eeand eeunbiased

4. "give eecredit eewhen eecredit eeis eedue"



physics ee- eeCORRECT eeANSWER ee-chemistry eein eemotion



biology ee- eeCORRECT eeANSWER ee-chemistry eein eea eecell



engineering ee- eeCORRECT eeANSWER ee-chemistry eein eeapplication



matter ee- eeCORRECT eeANSWER ee-anything eethat eeoccupies eevolume eeand eehas eemass



matter eeis eegoverned eeby... ee- eeCORRECT eeANSWER ee-composition eeand eeenergy



mixture ee- eeCORRECT eeANSWER ee-
a eecombination eeof eetwo eeor eemore eesubstances eein eewhich eethe eesubstances eeretain eetheir eedistinct
eeidentities




homogeneous eemixture ee- eeCORRECT eeANSWER ee-composition eeof eethe eemixture eeis eethe eesame
eethroughout




heterogeneous eemixture ee- eeCORRECT eeANSWER ee-
composition eeof eethe eemixture eeis eenot eeuniform eethroughout



mixture eeseparation ee- eeCORRECT eeANSWER ee-
physical eemeans eecan eebe eeused eeto eeseparate eea eemixture eeinto eeits eepure eecomponents



element ee- eeCORRECT eeANSWER ee-
a eesubstance eethat eecannot eebe eeseparated eeinto eesimpler eesubstances eeby eechemical eemeans

, number eeof eeelements eedefined ee- eeCORRECT eeANSWER ee-114



number eeof eeelements eethat eenaturally eeoccur eeon eeearth ee- eeCORRECT eeANSWER ee-82



number eeof eeelements eebeen eecreated eeby eescientists ee- eeCORRECT eeANSWER ee-32



compound ee- eeCORRECT eeANSWER ee-
a eesubstance eecomposed eeof eeatoms eeof eetwo eeor eemore eeelements eechemically eeunited eein eefixed
eeproportions




compound eeseparation ee- eeCORRECT eeANSWER ee-
compounds eecan eeonly eebe eeseparated eeinto eetheir eepure eecomponents ee(elements) eeby eechemical
eemeans




physical eeproperty ee- eeCORRECT eeANSWER ee-
properties eethat eecan eebe eeobserved eeand eemeasured eewithout eechanging eethe eecomposition eeof eethe
eesubsta eence ee(color, eedensity, eeconductivity, eeetc.)




chemical eeproperty ee- eeCORRECT eeANSWER ee-
properties eethat eeare eeonly eeobservable eeduring eea eechemical eechange ee(combustibility, eefood
eedigestion...)




extensive eeproperty ee- eeCORRECT eeANSWER ee-
a eeproperty eethat eedepends eeupon eehow eemuch eematter eeis eebeing eeconsidered ee(mass, eelength,
eevolume)




intensive eeproperty ee- eeCORRECT eeANSWER ee-
a eeproperty eethat eedoes eenot eedepend eeupon eehow eemuch eematter eeis eebeing eeconsidered ee(density,
eetemperat eeure, eecolor)




physical eechange ee- eeCORRECT eeANSWER ee-
does eenot eealter eethe eecomposition eeor eeidentity eeof eea eesubstance ee(ice eemelting, eesugar eedissolving
eein eewater)