Question

4. Give one example to show that when substances are mixed, it may result in a chemical or physical change depending on the conditions.
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Answer 1

Answer:

When substances are mixed together, it can result either in a physical change or a chemical change. Example: If iron and sulphur are mixed, no chemical change occurs. But when the mixture is heated, it glows after some time and a black substance is formed which is different from iron and sulphur.

Explanation:

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Answer 2

Answer:

iron and sulphur

Explanation:

when substances are mixed together, it may result either in a chemical or physical change depending on the conditions.example iron and sulphur are mixed, no chemical change occurs . but when the mixture is heated it glows after

some time and a black substanceis formed which is different from iron and sulphur