Molecules, crystals, and diatomic elements
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Khan AcademyMahesh Shenoy
Molecules, crystals, and diatomic elements
Elements and compounds can exist as pure substances, each with a fixed, definite composition. Some compounds, like water, are made of individual molecules. Others, like salt, form crystals—large, repeating 3D patterns without individual molecules. Additionally, some elements pair up as diatomic molecules, such as O₂ and H₂, rather than ...
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