To enter the general chemistry lab, you need:
Goggles
Closed-toe shoes
Lab manual
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Experiment 1
LABORATORY TOOLS:
THE BALANCE, GRADUATED CYLINDER, BURET, AND BUNSEN BURNER
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To have direct experience using these equipments.
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To develop basic skills in making measurements.
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To learn much more than the operational aspects of these devices.
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To learn how to record data as it is observed.
2
Digital Balance
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Do not place heavy item(s) (heavier than the balance can measure) on the
balances.
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Zero the balance using the tare (zero) function.
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Read the number till it is fixed/stable.
3
Graduate Cylinder
4
Buret
5
Bunsen Burner
Hottest part of the
flame is just above
the inner cone.
Air control
Gas inlet
Gas control
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Procedure
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Follow the directions on the report sheet.
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Record data and illustrate necessary calculations in the space provided below
each directive. Clearly label data and include units.
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Record all displayed digits on the electronic balance.
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Use the same balance for all weights in an experiment.
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Read and record liquid levels in the burettes to the hundredths place
(estimated digit).
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Some beakers will be used more than once. If necessary, rinse and dry them
between uses.
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Answer questions as you go along.
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Tear and submit the Work Sheets before you leave the lab.
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Clean up and Disposal
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Discard the solid salt in a nearby sink or trash can.
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Double check gas to Bunsen burner; make sure it is off.
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Clean all glassware that you used with soap and water; give it a final rinse
with deionized water.
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Empty your wash bottle, and return it and all other equipment to your
drawer. Lock the drawer.
•
Clean your work area with a sponge/paper towel.
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