CHM1025 FINAL EXAM REVIEW QUESTIONS AND CORRECT ANSWERS

CHM1025 FINAL EXAM REVIEW
QUESTIONS AND CORRECT ANSWERS
ChemistryA2-A2Ans--
TheA2studyA2ofA2composition,A2structure,A2properties,A2andA2reactionsA2ofA2matter

MatterA2-A2Ans--AnyA2materialA2thatA2hasA2massA2andA2occupiesA2space

ChemicalA2-A2Ans--
AnyA2substanceA2(matter)A2thatA2hasA2specificA2compositionA2obtainedA2byA2orA2usedA2inA
2chemicalA2reactions


BranchesA2ofA2ChemistryA2-A2Ans--
organicA2chemistry,A2inorganicA2chemistry,A2biochemistry,A2analyticalA2chemistry,A2physic
alA2chemistry

ScientificA2methodA2-A2Ans--
TheA2processA2usedA2byA2scientistsA2toA2explainA2observationsA2inA2nature.

StepsA2inA2scientificA2methodA2-A2Ans--observation,A2hypothesis,A2experiments,A2theory

MeasuringA2toolA2orA2deviceA2-A2Ans--
usedA2toA2compareA2someA2dimensionA2ofA2anA2objectA2toA2aA2standard.

TypesA2ofA2measurementA2-A2Ans--length,A2volume,A2mass,A2time,A2temperature.

LengthA2-A2Ans--
measuredA2usingA2aA2meterA2stick,A2hasA2aA2unitA2ofA2meterA2(m)A2inA2theA2metricA2andA2S
IA2systems.A2ForA2smallA2measurementsA2inA2chemistry,A2useA2centimetersA2(cm)

VolumeA2-A2Ans--
theA2spaceA2occupiedA2byA2aA2substance,A2hasA2aA2unitA2literA2(L)A2inA2metricA2systemA2an
dA2cubicA2meterA2inA2theA2SIA2system.A2UseA2mLA2forA2smallA2measurementsA2inA2chemist
ry.

MassA2-A2Ans--
TheA2quantityA2orA2amountA2ofA2materialA2itA2contains.A2ItA2isA2measuredA2usingA2aA2balan
ce,A2hasA2aA2unitA2gramA2(g)A2inA2theA2metricA2systemA2andA2kilogramA2(kg)A2inA2theA2SIA2s
ystem.

WeightA2-A2Ans--MeasureA2ofA2gravitationalA2pullA2onA2anA2object.

, TemperatureA2-A2Ans--
IndicatesA2howA2hotA2orA2coldA2anA2objectA2is.A2ItA2isA2measuredA2inA2celsiusA2inA2metricA2s
ystem.A2TheA2SIA2systemA2usesA2KelvinA2(K)A2scale.

TimeA2-A2Ans--HasA2aA2unitA2second(s)A2inA2bothA2theA2metricA2andA2SIA2system.

PrefixesA2-A2Ans--
TheyA2areA2usedA2inA2frontA2ofA2aA2baseA2unitA2toA2increaseA2orA2decreaseA2theA2sizeA2ofA2
thatA2unitA2byA2aA2factorA2ofA210.

EqualitiesA2-A2Ans--StateA2theA2sameA2measurementA2inA2twoA2differentA2units.

ExactA2NumbersA2-A2Ans--
NumbersA2obtainedA2byA2countingA2objectsA2e.g.A22A2soccerA2balls
NumbersA2inA2definitionA2(equalitiesA2thatA2compareA2twoA2unitsA2inA2theA2sameA2unitA2sys
tem)A2e.g.A21A2footA2=A212A2inches

MeasuredA2NumbersA2-A2Ans--
TheA2measurementsA2obtainedA2usingA2measuringA2devices
NumbersA2inequalitiesA2thatA2compareA2differentA2unitA2systemsA2example:A21LA2=A21.057
qt
exception:A21in=2.54cmA2(thisA2isA2exact)

SignificantA2figuresA2-A2Ans--
TheA2digitsA2inA2aA2measurement.A2AllA2certainA2andA2estimatedA2digitsA2inA2aA2measurem
entA2areA2ci=ountedA2asA2significantA2figures

AA2measureA2numberA2-A2Ans--
consistsA2ofA2certainA2digitsA2andA2anA2estimatedA2digit.A2LastA2numberA2inA2aA2measurem
entA2isA2estimated.

500A2-A2Ans--1A2significantA2figure

500.A2-A2Ans--3A2significantA2figures

SignificantA2figuresA2-A2Ans--MultiplicationA2andA2Division

DecimalA2PlaceA2-A2Ans--AdditionA2andA2Subtraction

ScientificA2notationA2-A2Ans--
AA2numberA2writtenA2inA2scientificA2notationA2containsA2aA2coefficientA2andA2aA2powerA2ofA
210


UnitA2Conversion:A2DimensionalA2AnalysisA2-A2Ans--Given:
Needed:
ConversionA2Factor: