Matter and Measurement

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Chapter 1 Matter and Measurement
Albert Einstein (1879-1955) The whole of science
is nothing more than a refinement of everyday
thinking.
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States of Matter
melting
condensing
Solid Liquid Gas
vaporizing
freezing
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States of Matter
Solid Gas
sublimation
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The Scientific Method
Making observations
Making predictions
Doing Experiments
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SI Units of Measurement
Measurement Unit Name Abbreviation
Mass gram g
Length Meter m
Time Second s
Temperature Kelvin K
Amount Mole mol
Derived Quantities
Speed meters/second m/s Volume meters3
(Liters) L Density grams/cm3 g/cm3
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An important non-SI unit the angstrom (Å) 1 Å
10-10 meters
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Significant Figures (Sig Figs)
There is uncertainty in every measured
quantity! The number of sig figs reflects the
uncertainty.
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Significant Figures (Sig Figs)