Advertisements
Advertisements
प्रश्न
What difference did you see - in the water with salt, and
the water with chalk powder - after keeping for some time?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
You put a steel plate on water. Would it sink or float? What would happen to a spoon?
Find out from the other groups which things floated and which sank in the water?
After doing the experiment, fill in the blanks.
The iron nail ______ in water but the katori ______. I think this happened because ______
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 |
|
||
| Iron nail or pin | ||
| Matchstick | ||
|
||
|
Aluminum foil (from medicine packing)
|
||
|
||
| A piece of ice |
Take some water in a glass. Put a lemon in it. Now keep putting salt in the water, half-a-spoon at a time. Were you able to float your lemon in water?
Could you see the salt after it dissolved in water? If no, why?
You have washed your handkerchief and you want to dry it quickly. What all can you do?
What things do you put in water to make tea? Which of those things dissolve in water?
You have been given some mishri pieces (lumps of sugar). Suggest some ways to dissolve them quickly.
Find out from the other groups which things floated and which sank in the water?
After doing the experiment, fill in the blanks.
The empty plastic bottle ______ on water. The bottle filled with water ______ because ______
Find out from the other groups which things floated and which sank in the water?
After doing the experiment, fill in the blanks.
The aluminium foil ______ when it was spread out. When pressed tightly into a ball it ______. This may have happened because ______
