Give one example of change which occurs on mixing two substances, but cannot be reversed.

One Line Answer

Mixing of cement and water is an irreversible change.

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Chapter 6: Changes Around Us - Long Answer Questions [Page 35]

Chapter 6 Changes Around Us
Long Answer Questions | Q 15. (e) | Page 35

Short Answer Type Question:
What happens when sugar is heated?

Match the following.

Choose the odd one out. Give reason for your choice.

Inflating a balloon, popping a balloon, fading of wall paint, burning of kerosene

To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?

Which is reversible change?

Water on ______ changes to ice and on ______ comes back to water.

Name the two types of changes.

What are reversible changes?

Salt can be separated from its solution (salt dissolved in water), because ______.

Select the odd one out. Give reason for your the choice