EngChem Topic 1 - Units, conversions, sig figs

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4 Terms

1
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Define a dimension

A physical quantity

e.g: length, time, mass, temperature

2
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Define a unit

A means of expressing dimensions

e.g: meters, seconds, kilograms

3
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Define a conversion factor

A ratio of equivalent quantities in different units

e.g: 1h = 3600s, 1kg = 1000g. 1inch = 25.4mm

4
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m

m