´Ü¾î : molecule / ¹ßÀ½ : ¸»:¸® Å¥:¿ï
¶æ : (ÈÇÐ) ºÐÀÚ
¶æ(¿µ¾î) : A molecule is the smallest amount of a chemical substance which can exist by itself.
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¶æ : A molecule of water consists of two atoms of hydrogen and one atom of oxygen.