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Chemical Changes and Reaction — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYChemical Changes and Reaction2 Marks
Question
Name five conditions for a chemical reaction. Support your answer by at least one example each.
✓

Answer

• change in color- eg- when lead nitrate is added to potassium sulphate , the precipitate so formed is in yellow in color.
•change in state. …
• change in temperature. …
• evolution of gases. …
• formation of precipitate.

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