SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Physical change .
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Chemical change .
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Both of them
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None of the above
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Detailed explanation-1: -Changes can be of two types, physical and chemical.
Detailed explanation-2: -A burning candle shows both physical and chemical changes.
Detailed explanation-3: -There are three types of change that all managers have to be aware of: these are Developmental Change; Transitional Change and Transformational Change.
Detailed explanation-4: -In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.
Detailed explanation-5: -Reversible change-eg. Melting of ice. Irreversible change-eg. Burning of paper. Periodic change-eg. Swinging of pendulum. Non-periodic change-eg. Occurrence of floods. Desirable change-eg. Ripening of fruits. Undesirable change-eg.Rusting of iron. Natural change-eg. Man-made change-eg. More items