SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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combined chemically
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that can be separated by physical change
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that cannot be separated
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combined in any proportion
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Detailed explanation-1: -Elements can be chemically combined into compounds, therefore, a compound consists of two or more elements combined, in definite proportions, by chemical means. Compounds may be formed by combining atoms of their constituent elements by ionic bonds or by covalent bonds.
Detailed explanation-2: -A pure chemical compound is a chemical substance that is composed of a particular set of molecules or ions that are chemically bonded. Two or more elements combined into one substance through a chemical reaction, such as water, form a chemical compound.
Detailed explanation-3: -Thus, A Compound is a pure substance that is formed when two or more elements are chemically combined in a definite proportion by mass. Q.
Detailed explanation-4: -A compound is a substance formed when two or more chemical elements are chemically bonded together.