CHANGES AROUND US ( Questions to do in the science file)
1. What are reversible changes? Give 3 examples.
2. What are irreversible changes? Give 3 examples.
3. How can we fix the iron blade of tools to the wooden handle? Explain.
4. How can we fix the metal rim on a wooden wheel of a cart?
5. What are the changes that occur in an incense stick, when it is burnt?
6. How can we bring about a change in a substance?
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A reversible change might change how a material looks or feels, but it doesn't create new materials. Examples of reversible reactions include dissolving, evaporation, melting and freezing.
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