write the definition of physical and chemical changes and its example
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Answer:
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting.
☆__________________________☆
➳Examples of physical changes are boiling, melting, freezing, and shredding.
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Answer:
A change in which no new substances are formed and which can generally be reversed by reversing the conditions is called a physical change.
A change in which new substances are formed and which cannot be reversed by reversing the conditions is called a chemical change.
Explanation:
Physical change: The melting of wax.
Chemical change: The burning of wax.
(both can be seen together in a lit candle)
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