7. Which of the following changes could be associated with either a chemical change OR a

Chemistry

1 answer:

Elan Coil [88]2 years ago

5 0

Answer:

a: chemical change because the change cannot be reversed.

b: physical change because the action can be reversed.

c: chemical change.

d:chemical change.

any change that cannot be reversed is a chemical change and any change that can be reversed is a physical change.

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Ca(OH)₂ + H₂SO₄ → CaSO₄ + 2H₂O

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