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Difference between physical and chemical change

Physical change alters only the form, size, or state of a substance without forming a new substance, whereas chemical change produces one or more new substances with different properties. This article is suitable for students in Classes 7–10. It explains the difference between physical and chemical change with clear definitions, tests, and everyday examples, making […]

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Olfactory Indicators: Detecting Acids and Bases Through Smell

what is olfactory indicator? Olfactory indicators are natural substances that can detect acidic or basic solutions based on changes in their characteristic smell or odor. These indicators work by having different odors in acidic and basic media, making them useful for identifying the nature of unknown solutions without using traditional color-changing indicators. Also Read: Activity

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