Density Measurement Virtual Lab Simulation | PraxiLabs

Density Measurement

Physics | Propperties of Matter



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General Aim

To determine the density for different materials in the form of regular solid, irregular solid and liquids.

Method

Direct measurements of mass and dimensions (or volume).

Learning Objectives (ILO’s)

  • By the end of the experiment, the student should be able to: Define the density of a material.

  • Understand that the density is a property of the material.

  • Identify the type of material from the density measurement. Prepare a suitable experimental setup to determine the density of a material in the form of a regular solid, irregular solid, and liquids.

Theoretical Background/Context

Properties of a substance that depend on the amount of matter present are extensive properties, e.g., volume of any object is directly proportional to the mass of the object. Density is an intensive property that doesn't depend on the mass of the object. The density ρ can be defined as the ratio of the mass of the body to its volume.

Principle of Work

To determine the density of the material of an object, we have to find its mass and volume. The mass can be measured using a digital balance with high accuracy. 

  1. For solid objects with a regular shape (block, cylinder, and sphere), we can calculate their volume by direct measurement of their dimensions.
  2. For a Solid object with an irregular shape, we will use the displaced liquid method to determine the volume of the object.  
  3. For liquids, we place a graduated glass beaker over the electronic digital balance and tare its reading. Then slowly pour the liquid under investigation into the glass beaker while being over the balance. The reading of the balance gives the mass of the liquid added to the glass beaker, while the volume of the liquid is read off the glass beaker scale.

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