Chemistry 101 - Exam -1 WITH CORECT ANSWERS.

Chemistry 101 - Exam #1 WITH CORECT
ee ee ee ee ee ee




ANSWERS ee




K ee= ee°C ee+ ee273.15 ee- eeCORRECT eeANSWER ee-Conversion eeto eekelvin eefrom eecelcius



Exa- ee- eeCORRECT eeANSWER ee-Symbol: eeE; ee10¹⁸



Peta- ee- eeCORRECT eeANSWER ee-Symbol: eeP; ee10¹⁵



Tera- ee- eeCORRECT eeANSWER ee-Symbol: eeT; ee10¹²



Giga- ee- eeCORRECT eeANSWER ee-Symbol: eeG; ee10⁹



Mega- ee- eeCORRECT eeANSWER ee-Symbol: eeM; ee10⁶



Kilo- ee- eeCORRECT eeANSWER ee-Symbol: eek; ee10³



Deci- ee- eeCORRECT eeANSWER ee-Symbol: eed; ee10⁻¹



Centi- ee- eeCORRECT eeANSWER ee-Symbol: eec; ee10⁻²



Milli- ee- eeCORRECT eeANSWER ee-Symbol: eem; ee10⁻³



Micro- ee- eeCORRECT eeANSWER ee-Symbol: eemew; ee10⁻⁶



Nano- ee- eeCORRECT eeANSWER ee-Symbol: een; ee10⁻⁹

, Pico- ee- eeCORRECT eeANSWER ee-Symbol: eep; ee10⁻¹²



Femto- ee- eeCORRECT eeANSWER ee-Symbol: eef; ee10⁻¹⁵



Atto- ee- eeCORRECT eeANSWER ee-Symbol: eea; ee10⁻¹⁸



Significant eeFigures eeRules ee- eeCORRECT eeANSWER ee-
1) All eenonzero eedigits eeare eesignificant ee(not eetrue; eecan eebe eebroken eeup eeinto eesubatmoic eeparticles
ee[protons


, eeneutrons, ee& eeelectrons])

2) Interior eezeroes ee(zeroes eebetween ee2 eenon-
zero eedigits) eeare eesignificant ee(not eetrue eebecause eeof eeisotopes)

3) Leading eezeroes ee(zeroes eeto eethe eeleft eeof eethe eefirst eenon-zero eedigit) eeare eenot eesignificant

4) Trailing eezeroes ee(zeroesBat eethe eeend eeof eea eenumber) eeare eecategorized eeas eefollows:

-Trailing eezeroes eeafter eea eedecimal eepoint eeare eealways eesignificant

-Trailing eezeroes eebefore eea eedecimal eepoint ee(and eeafter eea eenon-zero eenumber) eeare eealways eesignificant

-
Trailing eezeroes eebefore eean eeimplied eedecimal eepoint eeare eeambiguous eeand eeshould eebe eeavoided eeby
eeusing ees eecientific eenotation




Dalton's eeAtomic eeTheory ee- eeCORRECT eeANSWER ee-
1) Each eeelement eeis eecomposed eeof eetiny, eeindestructible eeparticles eecalled eeatoms

2) All eestoms eeof eea eegiven eeelement eehave eethe eesame eemass eeand eeother eeproperties eethat
eedistinguish eethem eef eerom eethe eeatoms eeof eeother eeelements



3) Atoms eecombine eein eesimple, eewhole-number eeratios eeto eeform eecompounds

4) Atoms eeof eeone eeelement eecannot eechange eeinto eeatoms eeof eeanother eeelement. eeIn eea eechemical
eereaction, eeatoms eeonly eechange eethe eeway eethat eethey eeare eebound eetogether eewith eeother eeatoms