Report Submitted: 9/15/13

Laboratory Techniques and Measurements

PURPOSE: The purpose of this lab was to experiment using the International System of Units to determine mass, length, temperature, volume, and density of objects and liquids using common measuring devices and formulas.

PROCEDURE: In this lab I performed several different exercises to learn how to obtain various lengths, temperature, mass, density, volume, concentration, and dilution.

Length: I measured various items using the ruler and recording in cm, mm, and meter.

Temperature: I measured water in various temperatures from ice cold to boiling hot then recorded our finding in Celsius and then converted to Fahrenheit and Kelvin.

Mass: I measured various objects using our digital scale and recorded the mass in gram and kilograms.

Volume/Density: I measured the mass and volume of various liquids and solids to calculate the density of this substance.

Concentration/Solution/Dilution: I used sugar and a solution of sugar to learn to calculate molecular weight, molarity, and how to calculate concentration and dilution of that solution.

CONCLUSION/DATA TABLES:

Length Measurements

Object

Length (cm)

Length (mm)

Length (m)

CD

12cm

120mm

.12m

Key

5.7cm

57mm

.057m

Spoon

18.1cm

181mm

.181m

Fork

18.5cm

185mm

.185m

Temperature Measurements

Water

Temperature (°C)

Temperature (°F)

Temperature (°K)

Hot from tap

42°

107.6° 315.15°

Boiling

98°

208.4°

371.15°

Boiling for 5 min

101°

213.8°

374.15°

Cold from tap

25°

77°

298.15°

Ice water – 1 min

5°

41°

278.15°

Ice water – 5 min

2°

35.6°

275.15°

Mass Measurements

Object

Estimated Mass (g)

Actual Mass (g)

Actual Mass (kg)

Pen

10g

9.8g

.0098kg

3 pennies

8g

7.5g

.0075kg

1 quarter

6g

5.6g

.0056kg

2 quarters, 3 dimes

18g

18.1g

.0181kg

4 dimes, 5 pennies

22g

21.5g

.0215kg

3 qtrs, 1 dime, 5pennies

32g

31.7g

.0317kg

Key

8g

7.6g

.0076kg

Key, 1quarter, 4pennies

23g

23.2g

.0232kg

Liquid Measurements

Mass A

Mass B

Mass B-A

Liquid

Volume (ml)

Graduated Cylinder (g)

Graduated Cylinder with liquid (g)

Liquid (g)

Density g/ml

%

Error

Water

5ml

17g

21.9g

4.9g

.98g/ml

.08%

Isopropyl Alcohol

5ml

17g

21.4g

4.4g

.88g/ml

.12%

Magnet – Measurement Method

Object:

Mass (g)

Length (cm)

Width (cm)

Height (cm)

Volume

Density

Magnet

4.4g

2.5cm

.5cm

.5cm

0.625cmᵌ

7.04g/cmᵌ

Displacement Method

Object

Mass (g)

Initial Volume (ml)

Final Volume (ml)

Object Volume (ml)

Density

(g/ml)

Magnet

4.4g

7ml

7.75ml

.75ml

5.9g/ml

Bolt

8.0g

7ml

8ml

1ml

8g/ml

Archimedes’ Method

Object

Mass (g)

Mass of Displaced Water (g)

Volume of Displaced Water (ml)

Density

(g/ml)

Metal Bolt

8.0g

1.1g

1.1ml

7.2g/ml

Magnet

4.4g

.8g

.8ml

5.5g/ml

Initial Concentration

Chemical

Mass (g)

Molecular Weight (g)

Moles in…