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Difference between a physical change and chemical change?
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Difference between a physical change and chemical change?
Differences Between Physical Change and Chemical Change
The points given below discusses significant differences between physical change and chemical change
1. A change in which the molecules are rearranged, but their internal composition remains same is called Physical Change. A process in which the substance transforms into a new substance, having a different chemical composition, it is known as Chemical Change.
2. Some common examples of physical change vaporisation, condensation, freezing/melting/boiling of water. On the contrary, the examples of chemical change are combustion, metabolism, cooking of egg, etc.
3. Physical change is a temporary; they are easily reversible. As against this, the chemical change is permanent in nature, i.e. they cannot be reversed, even by reversing conditions.
4. In the physical change, only the form of the substance is changed, but no new product is formed. On the other hand, when there is a chemical reaction, a completely different product is formed, whose properties are completely different from that of the reacting substances.
5. In a physical change, the original matter can be recovered, by simple physical methods. As opposed, in chemical change the original matter no longer exist, and so it cannot be recovered.
6. In the physical change, change in the physical attributes of the substance is observed, such as shape, size, appearance, texture, odour, density and so on. Conversely, chemical change involves the change in chemical properties of the substance, i.e. change in its chemical nature.
7. In the physical change, no or very little amount of energy is absorbed or given out as heat, light or sound energy. Unlike chemical change, wherein enormous energy is absorbed or given out as heat, light or sound energy
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Most Upvoted Answer
Difference between a physical change and chemical change?
A physical change doesn't change their substance but In chemical change where takes in chemical reaction & create new substance .
Community Answer
Difference between a physical change and chemical change?
Physical change is the change in which new substance is not formed but in chemical change a new substance is formed.
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Difference between a physical change and chemical change?
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Difference between a physical change and chemical change? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Difference between a physical change and chemical change? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Difference between a physical change and chemical change?.
Difference between a physical change and chemical change? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Difference between a physical change and chemical change? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Difference between a physical change and chemical change?.
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