A substance, A does not have fixed melting and boiling. Another substance, B, has fixed melting and boiling points and cannot be broken down by chemical reactions. A third substance, C, has fixed melting and boiling points and breaks down into simpler substances when heated. Identify which subtances is
A. An element
B. An compound
C. Mixture
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Answer:
a. an element – Gold
b. a compound – Ethanol
c. a mixture – oxygen
Explanation:
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