1 data analysis ch 2. 2 units of measurement si units si units base units base units derived units...
Post on 19-Jan-2016
218 Views
Preview:
TRANSCRIPT
1
Data AnalysisData Analysis
Ch 2Ch 2
2
Units of Measurement Units of Measurement
SI unitsSI units
Base UnitsBase Units
Derived Units Derived Units
3
SI unitsSI units
TimeTime Seconds (s)Seconds (s)
LengthLength Meter (m)Meter (m)
MassMass Kilogram (Kg)Kilogram (Kg)
TemperatureTemperature Kelvin (K)Kelvin (K)
Amount of substanceAmount of substance Mole (mol)Mole (mol)
4
Base UnitsBase Units
TimeTime Seconds Seconds
LengthLength Meter Meter
Mass Mass Kilograms Kilograms
5
Derived UnitsDerived Units
VolumeVolume Cubic centimeters (cmCubic centimeters (cm33))
Density Density Grams per Cubic centimeters (g/cmGrams per Cubic centimeters (g/cm33))
6
TemperatureTemperature
KelvinKelvin
CelsiusCelsius
FahrenheitFahrenheit
7
How to solve a problemHow to solve a problem Read the problem carefully. Read the problem carefully.
Identify what is being asked.Identify what is being asked. Analyze problem. Analyze problem.
List what you know and what you are looking List what you know and what you are looking for.for.
Gather information you may need Gather information you may need Conversions, formulas, tables, etc.Conversions, formulas, tables, etc.
Solve unknown. Solve unknown. Draw if needed. Draw if needed. Write equation or formula, sub in, solve.Write equation or formula, sub in, solve.
Evaluate answer. Evaluate answer. Does it make sense?Does it make sense?
Significant figures! Significant figures!
8
Scientific NotationScientific Notation
Adding and subtractingAdding and subtracting
Multiplying and dividing Multiplying and dividing
9
Dimensional AnalysisDimensional Analysis
Conversion factorConversion factor
Unit multiplierUnit multiplier
10
Reliability Reliability
AccuracyAccuracy
PrecisionPrecision
Percent error = Percent error =
11
Significant FiguresSignificant Figures
12
Significant Figures RulesSignificant Figures Rules Non-zeroesNon-zeroes
Ex: 72.3 g = 3Ex: 72.3 g = 3 Zeroes BETWEEN non zeroesZeroes BETWEEN non zeroes
60.5 g = 360.5 g = 3 Final 0 to right of decimal Final 0 to right of decimal
6.200 g = 46.200 g = 4 Zeroes that are placeholdersZeroes that are placeholders
0.025 g and 320 g = 20.025 g and 320 g = 2 Counting # and defined termsCounting # and defined terms
6 molecules and 60 s = 1 min6 molecules and 60 s = 1 min
13
Rounding Rounding
5 or greater round 5 or greater round UPUP
Less than 5 leave Less than 5 leave samesame
14
Sig Fig MATHSig Fig MATH
Rules for adding and subtractingRules for adding and subtracting
Rules for multiplying and dividing Rules for multiplying and dividing
15
Representing DataRepresenting Data
GraphsGraphs CircleCircle
BarBar
LineLine
SlopeSlope
16
CreditsCredits
Information was gathered from Information was gathered from Chemistry Glencoe bookChemistry Glencoe book
Images were used from Microsoft Clip Images were used from Microsoft Clip ArtArt
Media presentation was created by Media presentation was created by Michelle EstradaMichelle Estrada
top related