Required Practical: Density

This practical involves calculating the density of a REGULAR object and an IRREGULAR object:

 

Regular Objects:

 

To find the DENSITY of a regular-shaped object like a box:

• Measure the LENGTH, WIDTH, and HEIGHT of the box and multiply these dimensions to calculate the VOLUME.
• Use a MASS BALANCE to determine the MASS of the box.
• Apply the values to the DENSITY EQUATION.

 

 

For Irregular Objects:

For objects with an irregular shape, such as a key, the DISPLACEMENT TECHNIQUE is used:

• Measure the MASS of the object using a MASS BALANCE.
• Fill a Eureka can with water to the brim, and place a MEASURING CYLINDER under the spout.

• Submerge the irregular object in the Eureka can. The water displaced will pour into the measuring cylinder.
• The VOLUME of water displaced and collected in the measuring cylinder, equals the VOLUME of the object.
• Use both the MASS and the VOLUME in the DENSITY EQUATION to calculate the object's DENSITY.