SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Burning is always a chemical reaction.
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True
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false
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -The fuel, usually hydrocarbons, uses up oxygen from its surroundings and forms carbon dioxide and water. The water produced evaporates as water vapour as soon as it is formed due to the high temperature of the flame. Since a chemical reaction takes place, thus, we can say that burning is always a chemical change.
Detailed explanation-2: -As we burn a paper, it changes to ash i.e. changes its chemical composition, hence, it is a chemical change.
Detailed explanation-3: -During any chemical reaction, the mass of the products is always equal to the mass of the reactants.
There is 1 question to complete.