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प्रश्न
What difference did you see - in the water with salt, and
the water with chalk powder - after keeping for some time?
उत्तर
After keeping for some time, water with salt looks clear and transparent whereas the water with chalk powder looks whitish with some chalk powder settled down on the bottom of the glass.
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संबंधित प्रश्न
Would the cap of a plastic bottle sink or float on water?
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Do this experiment in groups of four friends. Each group will need a big pot filled with water and the things listed on the table. Put each thing one by one in water and observe. Write your observations in the table given below.
Mark [✓] for the things that float. Mark [×] for those that sink.
| Things to be put in water | I guessed before I did it | I saw when I did it |
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| Iron nail or pin | ||
| Matchstick | ||
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Aluminum foil (from medicine packing)
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| A piece of ice |
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| Things | Did it dissolve or not? | What happened after keeping for 2 minutes? |
| 1. Salt | ______ | ______ |
| 2. Soil | ______ | ______ |
| 3. Chalk powder | ______ | ______ |
| 4. 1 spoon milk | ______ | ______ |
| 5. Oil | ______ | ______ |
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