Question

discuss why rusting of iron and burning of paper are chemical changes​

Answer 1

Answer:

Rusting of iron and burning of paper are chemical change because when the changes occur new substances is formed and the the chemical composition is changed. Explanation: When iron is rusted the rust is the new material formed and the chemical composition also changes

Explanation:

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Answer 2

Answer:

Because they form new substances.The products have different chemical properties than its reactants and it is an irreversible change.

• We cannot get real iron from a rusted iron. when the iron is exposed to air and moisture, rust formation takes place. Rust is nothing but Iron Oxide; a new substance formed out of the reaction. ... Hence, rusting of iron is a chemical change.

• We cannot get a normal paper from the ashes of a burnt paper.If we burn a piece of paper then it will give carbon dioxide, water vapour, smoke and ash as products, these are entirely new products hence burning of paper is a chemical change

That's why rusting of iron and burning of paper are chemical changes.

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