Salt samples and classification in Refraction Of Light At Curved Surfaces – Class 10 Science Experiment

Chapter Name: Refraction Of Light At Curved Surfaces

Activity Name: Salt samples and classification in Refraction Of Light At Curved Surfaces

Activity Description:

In this experiment, various salt samples are collected, including sodium chloride, aluminum chloride, copper sulfate, sodium acetate, ammonium chloride, sodium hydrogen carbonate, and sodium carbonate. These salts are then dissolved in distilled water. The action of the resulting solutions is tested using litmus papers to determine their acidic, basic, or neutral nature.

The pH of each solution is also measured using pH paper (universal indicator). Based on the pH values obtained, the salts are classified into acidic, basic, or neutral categories. The experiment aims to identify the acids and bases used to form these salts.

Required Items:

  1. Black sketch pen
  2. Thick sheet of paper
  3. Cylindrical-shaped transparent vessel (glass tumbler)
  4. Water

Step by Step Procedure:

  1. Draw an arrow of length 4 cm on the sheet of paper using the black sketch pen.
  2. Place the empty cylindrical vessel on a table.
  3. Position the sheet of paper with the arrow behind the vessel in a way that the arrow mark is in a horizontal position.
  4. Look at the vessel from the other side and observe the image of the arrow.

Experiment Observations:

  • With the empty vessel, you will see a diminished (small-sized) image of the arrow.


  1. Ensure the arrow is drawn accurately on the paper for precise observations.
  2. Handle the glass tumbler with care to avoid any breakage or accidents.
  3. Make sure the vessel is clean and free from any distortions or impurities that could affect the observations.

Lesson Learnt from Experiment:

The experiment demonstrates how light undergoes refraction at curved interfaces when passing through different media, such as air and glass. When the vessel is empty, light refracts at the curved interface of the glass and air, resulting in a diminished image of the arrow. When the vessel is filled with water, the light refracts at the interface of the glass and water, leading to the formation of an inverted image.

Science Experiment Kits for Kids

Photo Title Price Buy
Einstein Box Junior...image Einstein Box Junior Science Gift Set | 2-in-1 Set of My First Science Kit & Slime Kit for 4-6-8 Year Olds| Birthday Gift for Boys & Girls ₹1,199.00
ButterflyEdufields 20+ Science...image ButterflyEdufields 20+ Science Kit For Kids | STEM Projects birthday gift For Boys and Girls Ages 7-8-10-12 |DIY Educational & Learning Experiment Toys for 7 To 12 Year Olds | Build 20+ Motor Machines ₹1,699.00
The Little Ones...image The Little Ones Science Kit - Science experiment kit for kids 6-8-10-12 years old,educational learning toys,Best gift for boys&girls,chemistry kit,science project[Complete science kit- 100+experiment]
WitBlox AI Artificial...image WitBlox AI Artificial Intelligence Robotic Science Kit for 101+ Project 137 Part 8 Yrs+, Interlocking Bricks, Electronic Sensor & Circuits to create Logic 2 Free Live Classes Gift Toy for Boys & Girls ₹3,700.00
Avishkaar Robotics Advanced...image Avishkaar Robotics Advanced Kit|150-In-1 DIY Stem Metal Kit|Multicolor|150+ Parts|Learn Robotics|Coding & Mechanical Design|for Kids Aged 10-14|Made in India|Educational DIY Stem Kit|Made in India ₹10,199.00
My Science Lab...image My Science Lab Ultimate Science Experiment Kit for Kids Age 6-14 | STEM Toys | Physics Kit Set | Science & Fun 5-in-1 Projects | School Science Kit | Best Educational Birthday Gift Toys for Boys and Girls ₹1,199.00

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *