Chemistry
Grade-10
Easy
Question
Differences between a chemical change and a physical change are
- The amount of mass left after a chemical change is smaller. The amount of mass left after a physical change remains the same.
- The amount of mass left after a chemical change is smaller than the amount left after a physical change AND in a chemical change the energy change is large.
- A physical change is cutting, bending, tearing and a Chemical change could involve fire, high temperatures, or color changes or a new smell.
- All of the above answers are true.
Hint:
Physical changes are the changes which are reversible in nature whereas chemical changes are irreversible in nature.
The correct answer is: All of the above answers are true.
All of the above answers include the differences between a chemical change and a physical change.
- During physical change, the makeup of a substance changes physically, but the arrangement of its molecules does not change.
- A substance's molecular structure completely changes as it goes through a chemical change or transformation. Therefore, new substances are created as a result of chemical reactions.
- A transient change is a physical one.
- A permanent change is a chemical change.
- Only physical properties, such as shape, size, etc., are impacted by a physical change.
- Chemical changes involve alteration of the substance's physical and chemical characteristics, including its makeup.
- There is almost no or very little energy absorbed during a physical change.
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