Measurement!

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Measurement!
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Remember the definition of Chemistry

• Chemistry is the study of matter and the changes
  that it undergoes.
• A change in matter a change in its energy
• So we measure matter and we also measure energy

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Metric System!

• The scientific system of measurement that makes
  math easier than does the English system because
  its based on multiplying and dividing by 10
  (within a certain quantity).
• Its also better because the French thought of it
  first.

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The Metric System Base Units
Quantity Unit Unit symbol
Length meter m
Mass gram g
Time second s
Amount mole mol
Electric current ampere A
Luminous intensity candela cd
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Tools of the trade that well use here at Poly
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Copy this chart and fill in as we go along
Quantity being measured Tool Tools Unit






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Two for Volume

• Beaker

• Graduated Cylinder

Basic unit for volume is the liter, but
beakers and graduated cylinders give you volume
in milliliters (mL). 1000 mL 1 L
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Time

• A chronometer, ok a clock, gives you time in
  seconds (s).

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Temperature

• A thermometer gives you temperature in
  degrees Celsius (C).

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Mass

• A triple beam balance gives you mass in grams (g).

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Length

• A ruler will give you distance in centimeters
  (cm) and millimeters (mm).
• 100 cm 1 meter
• 1000 mm 1 meter

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Quantity being measured Tool Tools Unit
Volume Beaker milliliter (mL)
Volume Graduated Cylinder milliliter (mL)
Time Chronometer seconds (s)
Temperature Thermometer degrees Celsius (C)
Mass Triple beam balance grams (g)
Length Ruler centimeters (cm) millimeters (mm)