SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is a pure substance made of two or more elements chemically combined in a set ratio. Ex:CO2 has a set ratio of 1:2, meaning for every one carbon atom there are two oxygen atoms.
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element
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compound
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mixture
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salad
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Explanation:
Detailed explanation-1: -A pure substance, basically composed of two or more elements and chemically combined in a fixed proportion is called a compound.
Detailed explanation-2: -Therefore, a compound is a pure substance made up of two or more elements combined chemically in a definite proportion by mass. That is, option (B)-definite, mass. Note: The compound can be broken down into its constituent elements by chemical means into atoms or molecules.
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