Question

Which of the following property does not describe a compound?
a) It is composed of two or more elements. b) It is a pure substance
c) It cannot be separated by physical process into its constituents.
d) It is mixed in any proportion by mass.​

Answer 1

Explanation:

Compounds are chemical substances that form when atoms of different elements bind together. These chemical bonds are very strong and it is impossible to break these bonds through physical means. ... Hence, two hydrogen atoms and one oxygen atom in combination give one water molecule. Therefore, option 4 is incorrect.

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Answer 2

c) I cannot be separated by physical process into more elemets