**Density Lab**

Name _______________________ Date __________

**Part One: Density by Measurement (24 points): **

(one point per blank, calculations are 2 points each)

Cylinder #1

Mass: _________________

Diameter: _________________

Radius (diameter/2): _________________

Height: _________________

Calculated volume of cylinder (show your work)

Calculated density of cylinder (show your work):

Cylinder #2 _________________

Mass: _________________

Diameter: _________________

Radius (diameter/2): _________________

Height: _________________

Calculated volume of cylinder (show your work):

Calculated density of cylinder (show your work):

Cylinder #3

Mass: _________________

Diameter: _________________

Radius (diameter/2): _________________

Height: _________________

Calculated volume of cylinder (show your work):

Calculated density of cylinder (show your work):

**Part Two: Density By Displacement (24 points):**

(one point per blank, calculations are 2 points each)

Cylinder #1

Mass from part one: ________

Initial volume: _________________

Final volume (with cylinder in graduated cylinder): _________________

Volume displaced by cylinder: _________________ (show work below)

Calculate the density of the cylinder by displacement. (show your work):

Cylinder #2

Mass from part one: ________

Initial volume: _________________

Final volume (with cylinder in graduated cylinder): _________________

Volume displaced by cylinder: _________________ (show work below)

Calculate the density of the cylinder by displacement. (show your work):

Cylinder #3

Mass from part one: ________

Initial volume: _________________

Final volume (with cylinder in graduated cylinder): _________________

Volume displaced by cylinder: _________________ (show work below)

Calculate the density of the cylinder by displacement. (show your work):

Calculate the percent error for all three cylinders (5 points).

Use your calculated __density by displacement__ as the experimental value. Use the density given in the chart below as the accepted value. Show your work. Percent error formula was given above.

**Substance**

**Density (g/cm3)**

**Aluminum**

**2.7**

**Acrylic**

**1.2**

**Polyethylene**

**0.9**

What sources of error could cause the differences (2 points)?