Question

Say whether the following statements are true or false

1) Periodic changes can occur at any time. _______

2) The breaking up of rocks using dynamite is an artificial change. ________

3) The rusting of iron is a slow, reversible change. ________

4) The new substances that are formed in a chemical reaction are called products. ______
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Answer 1

Answer:

1yes 2yes 3no 4yes

Explanation:

i am not sure about the answer