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![Page 1: Prentice-Hall © 2002 General Chemistry: Chapter 1 Slide 1 of 19 Philip Dutton University of Windsor, Canada Prentice-Hall © 2002 Chapter 1: Matter—Its.](https://reader030.fdocuments.us/reader030/viewer/2022033023/5697bf941a28abf838c900da/html5/thumbnails/1.jpg)
Prentice-Hall © 2002General Chemistry: Chapter 1Slide 1 of 19
Philip DuttonUniversity of Windsor, Canada
Prentice-Hall © 2002
Chapter 1: Matter—Its Properties and Measurement
General ChemistryPrinciples and Modern Applications
Petrucci • Harwood • Herring
8th Edition
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 2 of 19
Contents
Physical properties and states of matter Système International Units Uncertainty and significant figures Dimensional analysis
http://cwx.prenhall.com/petrucci/chapter1/deluxe.html
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 3 of 19
Properties of Matter
Matter: Occupies space, has mass and inertia
Composition: Parts or componentsex. H2O, 11.9% H and 88.81% O
Properties: Distinguishing features physical and chemical properties
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 4 of 19
States of Matter
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 5 of 19
1_15
Matter(materials)
Substances Mixtures
Elements CompoundsHomogeneousmixtures(solutions)
Heterogeneousmixtures
Physical processes
Chemical
reactions
Classification of Matter
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 6 of 19
Separations
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 7 of 19
Separating Mixtures
1_17
Substances tobe separateddissolved in liquid
Pureliquid
A B C
mixture
ChromatographyChromatography
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 8 of 19
Significant Figures
Number
6.29 g0.00348 g9.0 1.0 10-8
100 eggs100 g = 3.14159
Count from left from first non-zero digit.
Adding and subtracting.
Use the number of decimal places in the number with thefewest decimal places.
1.14 0.611.67613.416
SignificantFigures
3322infinitebad notationvarious
13.4
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 9 of 19
Significant figures
Multiplying and dividing.
Use the fewest significant figures.
0.01208 0.236
Rounding Off
3rd digit is increased if4th digit 5
Report to 3 significant figures.
10.235 12.4590 19.75 15.651
.
10.212.519.815.7
= 0.512
= 5.12 10-3
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 10 of 19
Units
S.I. Units
Length metre, m
Mass Kilogram, kg
Time second, s
Temperature Kelvin, K
Quantity Mole, 6.022×1023 mol-1
Derived Quantities
Force Newton, kg m s-2
Pressure Pascal, kg m-1 s-2
Eenergy Joule, kg m2 s-2
Other Common Units
Length Angstrom, Å, 10-8 cm
Volume Litre, L, 10-3 m3
Energy Calorie, cal, 4.184 J
Pressure
1 Atm = 1.064 x 102 kPa
1 Atm = 760 mm Hg
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 11 of 19
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 12 of 19
Temperature
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 13 of 19
Relative Temperatures
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 14 of 19
Volume
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 15 of 19
Density
= m/V
m=VV=m/
g/mLMass and volume are extensive properties
Density is an intensive property
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 16 of 19
Conversion
What is the mass of a cube of osmium that is 1.25 inches on each side?
Have volume, need density = 22.48g/cm3
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 17 of 19
Wrong units
The Gimli Glider, Q86, p30
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 18 of 19
Uncertainties
• Systematic errors.– Thermometer constantly 2°C too low.
• Random errors– Limitation in reading a scale.
• Precision– Reproducibility of a measurement.
• Accuracy– How close to the real value.
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Prentice-Hall © 2002General Chemistry: Chapter 1Slide 19 of 19
End of Chapter Questions
1, 3, 5, 12, 14, 17,
18, 20, 30, 41, 49,
50, 61, 72, 74, 79