Why Boiling Water Makes Clear Ice


❄️ Why is ice made from boiling water clear, but ice from normal water is cloudy?

1️⃣ What is inside normal water?

  • Normal water has air bubbles, dust, and tiny minerals.
  • You can’t see them easily, but they are there.

2️⃣ What happens when we boil water?

  • Boiling water pushes the air out.
  • The tiny air bubbles escape as steam.
  • After boiling, the water has much less air inside.

3️⃣ What happens when water freezes?

  • When water freezes, it turns into ice.
  • If air and dirt are inside the water,
    they get trapped inside the ice.
  • Trapped air makes ice look white or cloudy.

4️⃣ Why ice from boiled water is clear?

  • Boiled water has less air.
  • So when it freezes, nothing gets trapped.
  • Light passes through easily → clear ice

🧊 Simple comparison

Water typeAir insideIce look
Normal waterMore airCloudy
Boiled waterLess airClear

🧠 Easy way to remember

Air bubbles make ice cloudy
No bubbles make ice clear


🧪 Fun home experiment (with adult help)

  1. Boil water and let it cool.
  2. Freeze it in an ice tray.
  3. Freeze normal water in another tray.
  4. Compare the ice cubes!

Leave a comment