GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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element
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compound
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homogeneous mixture
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heterogenous mixture
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Detailed explanation-1: -Which one does not contain two or more kinds of atoms? element.
Detailed explanation-2: -Element. A pure substance that has only one kind of atom and cannot be broken into two or more simpler substances by physical or chemical means is an element.
Detailed explanation-3: -Note that a compound: consists of atoms of two or more different elements bound together, can be broken down into a simpler type of matter (elements) by chemical means (but not by physical means), has properties that are different from its component elements, and.
Detailed explanation-4: -Hydrogen, oxygen and nitrogen are elements as each of them are made up of two identical atoms. Whereas water is made up of two hydrogen atoms and one oxygen atom, therefore it is not an element.
Detailed explanation-5: -An element contains more than one type of atom.