SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Fire creates new substances. This describes ____ changes.
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physical
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chemical
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -A chemical reaction happens when substances break apart or combine to form one or more new substances. New substances form when bonds break and new bonds form. The chemical properties of the new substances are different from those of the original substances.
Detailed explanation-2: -Burning is a chemical change. This is because, new substances (e.g. ash and carbon dioxide CO2) are formed during burning.
There is 1 question to complete.