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Measurement in the Laboratory Proper Techniques Explained.

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Presentation on theme: "Measurement in the Laboratory Proper Techniques Explained."— Presentation transcript:

1 Measurement in the Laboratory Proper Techniques Explained

2 Precision Vs. Accuracy Accurate but not precisePrecise but not accuratePrecise AND accurate

3 Precision Vs. Accuracy

4 Tools Used in Lab  Striker  Mortar and pestle  Ring stand  Beaker  Erlenmeyer flask  Bunsen burner  Clamp  Funnel  Stirring rod  Pipette  Tongs  Watch glass

5 Tools for Lab Measurement  Ruler  Graduated Cylinder  Thermometer  Two-Pan or Triple-Beam Balance

6 A Note About Precision  You must look at the effective range and increments of measurements on the instrument you are using.

7 Thermometers  What are the increments?  How much can you safely estimate?

8 Pan Balances  What are the increments?  How much can you safely estimate?

9 Rulers  What are the increments?  How much can you safely estimate? A BCDEFGHIJKLMN

10 Graduated Cylinders  What are the increments?  How much can you safely estimate?


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