“Those change in which only the physical properties of the substance change but no new substance are formed are called physical changes.” In the physical change substance do not change their identity but there occur only a change in some of their physical properties such as physical state shape and size. There fore after the […]
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NCERT Class 7 Science Sixth Chapter Physical and Chemical Changes Exercise Solution
NCERT Class 7 Science Sixth Chapter Physical and Chemical Changes Exercise Solution Physical and Chemical Changes Inside Questions with Answers: Define physical properties. Ans. Properties such as shape, size, colour and state of a substance are called its physical properties. What is called physical change? Ans. A change in which a substance undergoes a change […]