Compare physical and chemical changes with one example of each type
Answers
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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Physical Change:
→ Those changes that take place in the physical properties of a substance such as colour, texture etc.
→ There is no formation of a new substance.
→ It is usually a reversible change.
→ Only some amount of energy is absorbed or evolved.
→ The changes in physical properties include change of state, change of colour, change of texture etc.
→ Examples of physical change: Change of ice into water and making a salt solution.
Chemical Change:
→ Those changes that take place in the chemical properties of a substance such that there is a formation of a new substance is known as chemical changes.
→ There is a formation of a new substance.
→ It is usually a irreversible change.
→ A great amount of energy is absorbed or evolved.
→ There is change in the chemical properties such as solubility, atomic structure etc.
→ Examples of chemical change: Rusting of iron and burning of paper.