Give two examples of reversible changes.

How does curd being set? Is this change reversible?

Explain how a metal rim slightly smaller than a wooden wheel can be fixed on it.

What happens when sugar is heated?

What is a chemical change? Explain with example.

What is a physical change? Explain with example.

Write some changes happening in our body.

What are slow and fast changes? Give examples.

Why does a blacksmith heat the metal rim to fix it on a cart wheel?

Can you change the shape of a eraser after erasing?

Does the size of the paper change after making an aeroplane by folding it or by cutting it?