1. LAB OVERVIEW

2. HOW TO READ A GRADUATED CYLINDER?

3. mL

4. We report a measurement by recording
ALL the certain digits + ONE uncertain digit
Significant Figures
(except leading zeros. more details in a minute.)

5. 10-mL graduated cylinder: 2 decimal places;

6. DETERMINE THE ACCURACY OF 4 VOLUMETRIC TOOLS
PURPOSE
DETERMINE THE ACCURACY OF 4 VOLUMETRIC TOOLS
BEAKER
GRADUATED CYLINDER
PIPET
BURET

7. PERCENT ERROR
% ERROR =
WHERE: EXP = EXPERIMENTAL VALUE THE = THEORETICAL VALUE

8. HOW TO FIND EXPERIMENTAL VALUES?
BEAKER: 25 mL GRADUATED CYLINDER: mL PIPET: mL BURET: 2x.xx mL

9. HOW TO FIND THEORETICAL VALUES ?
V = m/d
d ─ MEASURE WATER TEMPERATURE, THEN READ FROM APPENDIX H.
m ─ MEASURE FROM A BALANCE. USE A BEAKER (EXCEPT GRADUATED CYLINDER) TO CARRY YOUR WATER SAMPLE TO THE BALANCE.

10. BALANCE TIPS USE THE SAME BALANCE SOLID OBJECTS ONLY ON BALANCE PAN
USE CONTAINER FOR LIQUIDS/POWDERS
POUR LIQUIDS & POWDERS AWAY FROM BALANCE
ZERO BALANCE (ZERO OR 0/T BUTTON) BEFORE EACH MEASUREMENT

11. EXPERIMENT #2 ORDER OF MEASUREMENTS
CLEAN YOUR BENCH AREA AND ASK FOR INSPECTION BEFORE LEAVING. SQUEEZE BOTTLE AND PAPER TOWEL.

12. EXPERIMENT #2
QUESTIONS?