Salt that Makes Eggs Float

🥚 Experiment Name: Salt that Makes the Egg Float (Density Experiment)

Story:
“Kids, today we are going to teach eggs how to swim! Let's see if an ordinary egg can stay afloat in water, or does it need a secret helper?”

🛠 Materials:

• 2 raw eggs
• 2 clear cups (glass is preferred)
• 5–6 tablespoons of table salt
• Tap water
• Spoon for mixing

🧪 Step by Step Application:

1. Normal Water Experiment
Fill one cup with water and carefully drop the egg inside.
👉 The egg sinks to the bottom.
(Ask your child: “Why do you think it sank?”)

2. Preparing Salt Water
Put the same amount of water in the second cup. Add the salt and stir until it completely dissolves.

3. Big Surprise
Drop the second egg into the salt water.
👉 This time, the egg stays on the surface!

4. Bonus: Magical Layers
Slowly pour normal water over the salt water using the back of a spoon.
👉 You can observe that the egg is “suspended” in the middle of the cup.

🧐 What’s Happening? (Scientific Explanation)

This experiment is based on the concept of density.

• Initially: The egg is denser than normal water, which is why it sinks.
• When salt is added: The dissolved salt increases the density of the water.
• Result: Saltwater becomes denser than the egg and keeps it afloat.

💡 Questions to Ask Children:

• “Do you think it's easier to swim in the sea or in a pool?”
• “Why did the egg sink first and then float?”
• “What would happen if we used sugar instead of salt?”

🎯 Learning Outcomes:

• Establishing cause-and-effect relationships
• Making observations and predictions
• Developing scientific curiosity
• Supporting language development (through questions and answers)

👩‍👧‍👦 Parent Note:
Instead of giving ready answers to your child during the experiment, allow them to make predictions.
The question “What do you think?” is the strongest key to learning.

 (Suitable for children aged 5 and above.)