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Chemistry CBSE Live product
Class 9
Is matter around us pure?
Classification of matter
4.
Classification of elements
Question:
2
m.
Choose the correct answer:
According to Antoine Lavoisier’s definition, which scenario would best disprove a substance’s status as an element?
It reacts physically to form simpler substances
It melts when heated
It conducts electricity
It has a shiny appearance
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