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Goggles

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To enter the general chemistry lab, you need: Goggles Closed-toe shoes Lab manual Experiment 1 LABORATORY TOOLS: THE BALANCE, GRADUATED CYLINDER, BURET, AND BUNSEN ... – PowerPoint PPT presentation

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Title: Goggles


1
To enter the general chemistry lab, you need
Goggles
Closed-toe shoes
Lab manual
2
Experiment 1 LABORATORY TOOLS THE BALANCE,
GRADUATED CYLINDER, BURET, AND BUNSEN BURNER
  • To have direct experience using these equipments.
  • To develop basic skills in making measurements.
  • To learn much more than the operational aspects
    of these devices.
  • To learn how to record data as it is observed.

3
Digital Balance
  • Do not place heavy item(s) (heavier than the
    balance can measure) on the balances.
  • Zero the balance using the tare (zero) function.
  • Read the number till it is fixed/stable.

4
Graduate Cylinder
5
Buret
6
Bunsen Burner
Hottest part of the flame is just above the inner
cone.
Air control
Gas inlet
Gas control
7
Procedure
  • Follow the directions on the report sheet.
  • Record data and illustrate necessary calculations
    in the space provided below each directive.
    Clearly label data and include units.
  • Record all displayed digits on the electronic
    balance.
  • Use the same balance for all weights in an
    experiment.
  • Read and record liquid levels in the burettes to
    the hundredths place (estimated digit).
  • Some beakers will be used more than once. If
    necessary, rinse and dry them between uses.
  • Answer questions as you go along.
  • Tear and submit the Work Sheets before you leave
    the lab.

8
Clean up and Disposal
  • Discard the solid salt in a nearby sink or trash
    can.
  • Double check gas to Bunsen burner make sure it
    is off.
  • Clean all glassware that you used with soap and
    water give it a final rinse with deionized
    water.
  • 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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