1

Goggles

To enter the general chemistry lab, you need:

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

Air control

Gas inletGas control

Hottest part of the flame is just above the inner cone.

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.