A substance that...........is considered to b | vedclass

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(D) chemical compound is a substance formed when two or more different chemical elements are chemically bonded together.In a compound,the atoms of dif

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Contains at least two different elements

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(D) chemical compound is a substance formed when two or more different chemical elements are chemically bonded together.In a compound,the atoms of different elements are held together by chemical bonds (ionic,covalent,or metallic) in a fixed ratio.Therefore,the defining characteristic that distinguishes a compound from an element is that it must contain at least two different types of atoms (elements) chemically combined.

Components	$\%$ of the total cellular mass
$A$. Water	$1. 10-15$
$B$. Proteins	$2. 70-90$
$C$. Carbohydrates	$3. 5-7$
$D$. Lipids	$4. 3$
$E$. Nucleic acids	$5. 2$
$F$. Ions	$6. 1$

$A$ substance that...........is considered to be a chemical compound.

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