Question

in addition to formation of a new substance what all changes can be observed during a chemical change give one example of each type of change

Answer 1

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Answer 2

when carbon and sulphur are heated heat energy is absorbed in carbon sulphur is formed.

you observe that when baking soda is add to vinegar at it carbon dioxide gas is produced with a hissing sound.

vinegar + Baking soda- carbon dioxide+Hissing sound