1-1 Discussion Measurements (1)

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1-1
Measurements and
Accuracy/Precision
1.
2.
3.
4.
5.
Quantitative vs Qualitative Measurement
Accuracy vs Precision
International System of Units
SI Base Unit Conversions
Dimensional Analysis/ Factor Label Method
Qualitative vs. Quantitative Measurements
Qualitative:
Quantitative:
Quantitative Measurements
Ruler:
Balance:
Thermometer:
Beaker/Graduated Cylinder:
Accuracy vs Precision
Accuracy
Precision
International System of Units
SI Base Unit Conversions
**you need to have these memorized by
SI Base Unit Conversions
**you need to have these memorized by
3m
Given
100 cm
1m
For meters to cancel out,
meters in the conversion
factor must be on the
opposite side of the fraction
(fence).
Conversion
Factor
= 300cm
Multiply every number on top
of the fence and divide by the
bottom.
1516 g
1 kg
1000 g
conversion factor
 1.516 kg

Convert 1200 cm to m.

Convert 5200 mL to L.

Convert 3 km to mm.

Common Conversion Factors
 5280 ft = 1 mile
 12 in = 1 ft
 1 mile = 1600 m
 1 in = 2.54 cm
 3 ft = 1 yard
English to Metric
conversion factors
1.
Convert 45 m/s to miles/hr.
2.
Convert 8 km/min to m/s.
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