General Chemistry I
Lab 2: Laboratory Techniques and Measurements
Purpose
Procedure
Data
Data Table 1: Length measurements.
Object
Length (cm)
Length (mm)
Length (m)
CD or DVD
Key
Spoon
Fork
Data Table 2: Temperature measurements.
Water
Temperature (°C)
Temperature (°F)
Temperature (K)
Hot from tap
Boiling
Boiling for 5 minutes
Cold from tap
Ice water – 1 minute
Ice water – 5 minutes
Data Table 3: Mass measurements.
Object
Estimated Mass (g)
Actual Mass (g)
Actual Mass (kg)
Pen or pencil
3 Pennies
1 Quarter
2 Quarters, 3 Dimes
3 Quarters, 1 Dime,
5 Pennies
Key
Key, 1 Quarter, 4 Pennies
Data Table 4: Liquid measurements.
Mass A
Mass B
Mass B - A
Liquid
Volume(mL)
Graduate
Cylinder (g)
Graduated Cylinder with
liquid (g)
Liquid (g)
Density
g/mL
% Error
Water
Isopropyl alcohol
Data Table 5: Magnet – Measurement Method.
Object:
Mass
(g)
Length
(cm)
Width
(cm)
Height
(cm)
Volume
(cm3)
Density (g/cm3)
Magnet
Data Table 6: Displacement Method.
Object
Mass
(g)
Initial volume of graduated cylinder (mL)
Final volume of graduated cylinder (mL)
Object Volume (mL)
Density
(g/mL)
Magnet
Metal bolt
Data Table 7: Archimedes’ Method.
Object
Mass
(g)
Mass of Displaced Water (g)
Volume of Displaced Water (mL)
Density (g/mL)
Metal Bolt
Magnet
Data Table 8: Initial Concentration.
Chemical
Mass (g)
Molecular Weight (g)
Moles in Volumetric Flask
Total Volume (L)
Molarity (mol/L)
Sugar
(C12H22O11)
Data Table 9: Dilution Series.
Dilution
Volume (mL)
Mass (g)
Density (g/mL)
Initial Concentration (M)
Volume Transferred (mL)
Final Concentration (M)
0
25 mL
0 mL
1
25 mL
2.5 mL
2
25 mL
4.5 mL
3
25 mL
3 mL
4
25 mL
6...