- Could you see the salt after it dissolved in water? If no, why?
- Does that mean that now the water does not have salt? If it has, then where is the salt?
- What difference did you see – in the water with salt, and the water with chalk powder – after keeping for sometime?
- Which of the two would you be able to separate from the water by straining with a cloth – salt or chalk powder?
- Do you think the oil got dissolved in the water? Why do you think so?
- You also try to do the same and then tell – which drop went ahead? Why did it slide faster?
- Could you see the salt after it dissolved in water? If no, why?
- Does that mean that now the water does not have salt? If it has, then where is the salt?
- What difference did you see – in the water with salt, and the water with chalk powder – after keeping for sometime?
- Which of the two would you be able to separate from the water by straining with a cloth – salt or chalk powder?
- Do you think the oil got dissolved in the water? Why do you think so?
- You also try to do the same and then tell – which drop went ahead? Why did it slide faster?
- No, we could not see the salt after it dissolved in water.
This is because as soon as salt is added into water it starts breaking down into smaller particles that are difficult to be seen by naked eyes. These salt particles get inside the water. At this stage, the salt starts dissolving in the water and a stage comes when the entire salt gets dissolved. Thus, no more salt could be seen.
- No, that does not mean that water does not have salt.
The salt got broken into smaller particles that occupy the position in between the particles of water.
- After keeping for sometime, the water with salt looks clear. However, the water with chalk powder does not. Some of the chalk powder gets settled while some of it remains scattered throughout the water.
-
Out of the two substances, we would be able to separate chalk powder from water by straining with a cloth. This is because salt particles cannot be seen in water whereas chalk powder can be.
- Oil will not get dissolved in water
Disclaimer: The second part of the question aims to increase the process of scientific thinking in the students. Keeping this process of participation in mind, the answer to this question has not been provided.
- Disclaimer: The purpose of this question is to introduce the children to the method of general science activities. This involves certain prior imagination followed by experimentation and logical deductions. Considering the sustenance of this process of imagination and experimentation the answer to this question has not been provided.
- No, we could not see the salt after it dissolved in water.
This is because as soon as salt is added into water it starts breaking down into smaller particles that are difficult to be seen by naked eyes. These salt particles get inside the water. At this stage, the salt starts dissolving in the water and a stage comes when the entire salt gets dissolved. Thus, no more salt could be seen.
- No, that does not mean that water does not have salt.
The salt got broken into smaller particles that occupy the position in between the particles of water.
- After keeping for sometime, the water with salt looks clear. However, the water with chalk powder does not. Some of the chalk powder gets settled while some of it remains scattered throughout the water.
-
Out of the two substances, we would be able to separate chalk powder from water by straining with a cloth. This is because salt particles cannot be seen in water whereas chalk powder can be.
- Oil will not get dissolved in water
Disclaimer: The second part of the question aims to increase the process of scientific thinking in the students. Keeping this process of participation in mind, the answer to this question has not been provided.
- Disclaimer: The purpose of this question is to introduce the children to the method of general science activities. This involves certain prior imagination followed by experimentation and logical deductions. Considering the sustenance of this process of imagination and experimentation the answer to this question has not been provided.
