PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Lighting match is a chemical change
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X
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✓
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Since combustion is a chemical reaction involving reaction with oxygen forming new products, burning of matchstick is a chemical change.
Detailed explanation-2: -When a matchstick is rubbed against a suitable surface the combustible substances start to burn with the evolution of heat and light energy. Thus, chemical energy stored within combustible substances of matchstick transforms into heat and light energy.
There is 1 question to complete.