Colour of the flames when ferrous sulphate crystal is heated
Hello,
When ferrous sulphate crystals are heated, they first lose water of crystallization and the crystals change colour from green to white. On further heating, the compound decomposes and forms brown solid (ferric oxide) along with gases like sulphur dioxide and sulphur trioxide. During this process, the substance does not produce a characteristic flame colour like alkali metals; instead, you mainly observe the colour change of the solid and the release of pungent gases.
You can read more about this reaction and similar chemistry concepts here:
https://school.careers360.com/articles/chemical-reactions-and-equations
For detailed CBSE Class 10 Science notes and explanations, this Careers360 guide is helpful:
https://school.careers360.com/boards/cbse/cbse-class-10-science
You can also practice Class 10 Science question papers to understand how such questions appear in exams:
https://school.careers360.com/boards/cbse/cbse-previous-year-question-papers-class-10
Thank you

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