Question

true or false .
1.all changes of a state are physical changes
2.all atoms of an element differ from each other.
3. neutralization reactions between acids and bases are endothermic reactions.
4. when an atom loses or gains electrons it becomes a charged particle. ​

Answer 1

Answer:

1. true

2. false

3. true

4. true

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Answer 2

Explanation:

1)false

physical change that invovle change of state

are all reversible other changes of states in include vaporization.

2) false

because atom of same element have same properties

3)false

neutralization reaction between acid and bases are exothermic reaction

4)True

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