SCIENCE
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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vapor
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mixture
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Detailed explanation-1: -A compound is a substance composed of two or more different types of elements chemically combined in a fixed proportion.
Detailed explanation-2: -A compound is a substance that contains two or more elements chemically combined in a fixed proportion. The elements carbon and hydrogen combine to form many different compounds.
Detailed explanation-3: -In science, a substance made from two or more different elements that have been chemically joined. Examples of compounds include water (H2O), which is made from the elements hydrogen and oxygen, and table salt (NaCl), which is made from the elements sodium and chloride.
Detailed explanation-4: -In chemistry, the law of definite proportions, sometimes called Proust’s Law, states that a chemical compound always contains exactly the same proportion of elements by mass.