What is Dissolving? An Easy Science Explanation for Kids
Learn about dissolving with this fun, kid-friendly explanation and simple experiments using sugar and water.
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Dissolving is when a substance (like sugar) mixes completely with a liquid (like water) and seems to disappear, although it is still there. This happens because the tiny particles of the substance spread out evenly throughout the liquid. A fun way to see this in action is to stir a teaspoon of sugar into a glass of water and watch it dissolve. This is a great experiment to show how materials can change form without disappearing.
FAQs & Answers
- What does it mean for a substance to dissolve? Dissolving occurs when a substance mixes completely with a liquid, such that its particles spread out and are no longer visible, even though they are still present in the solution.
- Can you give an example of something that dissolves? A common example of dissolving is when sugar is added to water. As you stir, the sugar appears to disappear, demonstrating how it dissolves.
- Is dissolving a physical change? Yes, dissolving is considered a physical change because the substance retains its chemical identity and can be recovered through evaporation or crystallization.
- Why do some substances dissolve faster than others? The rate at which a substance dissolves depends on factors like temperature, stirring, and the size of the particles. For instance, sugar dissolves more quickly when warm water is used compared to cold water.