gyankalakumbhKNOWLEDGE. ART. POSSIBILITY.Gone—or mixed in?
Salt becomes hard to see in water. Where did it go?
Here is what is happening.
When salt dissolves, it spreads through water so its grains are no longer visible. This differs from an object merely breaking into visible pieces. A clear-looking liquid is not necessarily pure water. Never taste a liquid to identify it. Dissolving does not mean the material stops existing.
Pause. Make the idea your own.
Explain one idea to a partner, draw it or write it in your own words. Which part is an observation, an example or a question?
You can use a home language. No need to share personal experiences or finish everything in one sitting.Your little investigation
Adult supervision, a transparent unbreakable cup, water, a spoon and table salt. No tasting or heating.
With an adult, add a small pinch of table salt to water in a transparent cup.
Stir gently. Draw what you see before and after, without tasting.
Explain why “I cannot see grains” differs from “there is nothing in the water”.