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What are Changes Around Us?
They are modifications we see in objects and substances every day.
- Ice cubes change from solid to liquid when heated.
- Cold bottles become warm when left outside.
- Buds grow and develop into beautiful flowers .
- Fruits change colour and smell as they ripen.
Activity 5.1: Let us think and reflect
You might have observed various changes happening around you. Some of them are listed in Table 5.1. You may notice that something is changing in each case. Take a moment to reflect on the changes in each case. Record your observations in Table 5.1.
Table 5.1: Some changes observed around us
| S.No. | Change | Observation(s) |
|---|---|---|
| 1. | Melting ice cubes | State changes (solid → liquid); shape changes |
| 2. | Chopping vegetables | Size and shape change |
| 3. | Boiling water | State changes (liquid → gas/steam) |
| 4. | Making popcorn from corn | Size, shape and colour change; smell changes |
| 5. | Cutting a piece of paper | Size and shape change |
| 6. | Adding beetroot extract to water | Colour of water changes (turns red/pink) |
| 7. | Burning wood | Colour changes; smell changes; ash (new substance) forms |
| 8. | Drying wet clothes | Texture changes (wet → dry) |
| 9. | Making small balls of dough | Shape changes |
| 10. | Rolling small balls of dough into chapatis | Shape changes (becomes thin and flat) |
| 11. | Cooking an egg | Colour and texture change; smell changes; new substance forms |
You might have noticed that these changes could be in the size , shape , smell , or other property of the substance or object. Can you think of some other changes that happen in your surroundings? Make a list of those changes too.
We observe the changes occurring around us with the help of our senses of sight , smell , touch , hearing , and taste .
