Which of the following statements are the characteristics of a physical change? Class 7
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Which of the following statements are the characteristics of a physical change? Class 7
Which of the following statements are the characteristics of a physical change? Class 7
(i) The state of the substance may or may not change.
(ii) A substance with different properties is formed.
(iii) No new substance is formed.
(iv) The substance undergoes a chemical reaction.
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (iii) and (iv)
Answer:
(c) (i) and (iii)
(i) The state of the substance may or may not change - Physical changes can involve changes in state (like melting or freezing) but no new substance is formed.
(iii) No new substance is formed - In a physical change, the substance remains the same, only its form or state changes.