OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a compound consists of two or more distinct atoms
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a molecule is only found as the subunit of a compoundchemically bonded
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a molecule may consist of two similar elements chemically bonded
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a compound consists of any two or more atoms
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Detailed explanation-1: -The correct answer is Option 4. They are formed by the combination of elements in definite proportions. In the formation of compounds, there is absorption or release of light, heat, electricity, etc. Every compound is a pure and homogeneous substance.
Detailed explanation-2: -A molecule is a group of two or more atoms held together by chemical bonds. A compound is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. All molecules are not compounds. All compounds are molecules.
Detailed explanation-3: -The molecule of element consists of only one kind of atoms but the molecules of an compound in made up of two or more kind of atoms. Similarity between a molecule of a compound and a molecule of an element is that both of them are made up of atoms and have bonds linking their atoms together.
Detailed explanation-4: -All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. Water (H2O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms.