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What is Soluble in Water What is Not II Video Lecture | Crash Course for Class 6

FAQs on What is Soluble in Water What is Not II Video Lecture - Crash Course for Class 6

1. What does it mean for a substance to be soluble in water?
Ans. A substance is considered soluble in water if it can dissolve in water to form a solution. This means that when the substance is added to water, it breaks down into smaller particles and spreads evenly throughout the liquid, making it appear clear.
2. Can you give examples of common soluble substances?
Ans. Yes, common substances that are soluble in water include salt (sodium chloride), sugar (sucrose), and baking soda (sodium bicarbonate). When these substances are mixed with water, they dissolve completely.
3. What are some examples of substances that are not soluble in water?
Ans. Substances that are not soluble in water include oil, sand, and chalk. These materials do not dissolve in water and instead either float on the surface or settle at the bottom.
4. How can we test if a substance is soluble or not?
Ans. To test if a substance is soluble, you can add a small amount of the substance to a glass of water and stir it. If the substance disappears and the water becomes clear, it is soluble. If it remains as a solid or forms a layer, it is not soluble.
5. Why is it important to know which substances are soluble in water?
Ans. Knowing which substances are soluble in water is important in various areas such as cooking, chemistry, and environmental science. It helps in understanding how different materials interact with water, which is essential for making solutions, understanding biological processes, and managing pollutants in water sources.
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