Find relative density of milk, groundnut oil and kerosene in Floating bodies – Class 9 Science Experiment

Chapter Name: Floating bodies

Activity Name: Find relative density of milk, groundnut oil and kerosene in Floating bodies

Activity Description:

This experiment aims to determine the relative density of milk, groundnut oil, and kerosene by comparing their weights with the weight of an equal volume of water.

Required Items:

• Small bottle (50 ml capacity, weighing at least 10 gm), weighing balance or spring balance, weights, milk, groundnut oil, kerosene (about 50 ml each) in separate containers.

Step by Step Procedure:

1. Measure and record the weight of the empty bottle.
2. Fill the bottle with 50 ml of water and measure its weight. Record this value.
3. Calculate the weight of 50 ml of water by subtracting the weight of the empty bottle.
4. Repeat the process for milk, groundnut oil, and kerosene. Record the weights in separate columns of a table.
5. Calculate the weight of each liquid by subtracting the weight of the empty bottle.
6. Calculate the relative density of each liquid by comparing the weight of the liquid with the weight of an equal volume of water.

Experiment Observations:

1. Record the weights of the bottles with different liquids and the calculated relative densities.

Precautions:

1. Ensure accurate measurements and readings during the experiment.
2. Handle the liquids carefully to avoid spills or accidents.
3. Clean and dry the bottle between each measurement to prevent contamination.

Lesson Learnt from Experiment:

The experiment helps understand the concept of relative density and how different liquids behave when placed on top of each other based on their densities.