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CBSE - Class 07 - Science - Physical and Chemical Changes

Physical and Chemical Changes: Chemical substances; in a chemical reaction a new substance is formed. Test tubes, droppers, common pins, vinegar, baking powder.

Online test Physical and Chemical Changes: Chemical substances; in a chemical reaction a new substance is formed. Test tubes, droppers, common pins, vinegar, baking powder.

Physical and Chemical Changes

Physical and Chemical Changes: Chemical substances; in a chemical reaction a new substance is formed. Test tubes, droppers, common pins, vinegar, baking powder.



Online test Physical and Chemical Changes: Chemical substances; in a chemical reaction a new substance is formed. Test tubes, droppers, common pins, vinegar, baking powder.

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