Question

Diff bw chemical and physical changes... 4-6 points
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Answer 1

Answer:

physical change

1)no new substance are formed.

2)It is a temporary change

3)It is easily reversible

4)The mass of substance does not alter in a physical change

Chemical change

1)new substance are formed

2)It is a parmanent change

3) It is usually irreversible

4)

The mass of substance does alter in a chemical change

Answer 2

Physical Changes

1. Physical changes are reversible.
2. No new substance are formed .
3. Physical changes are temporary.
4. After a physical change mass of the substance does not change.

Chemical Changes

1. Chemical changes are irreversible
2. New substances are formed after a chemical change.
3. Chemical changes are permanently.
4. After a chemical change mass of the individual substance changes.

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