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. 123456789 Pan Balances  What are the increments?  How much can you safely estimate? 40 506070 8090100 110 120130140150

9. Rulers 123456789  What are the increments?  How much can you safely estimate? A BCDEFGHIJKLMN

10. Graduated Cylinders 40 60 55 50 45 5 9 8 7 6 -30 10 0 -10 -20 0 0.4 0.3 0.2 0.1  What are the increments?  How much can you safely estimate?