https://hi.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:structure-of-nature-and-matter/x0c8b40bd4b242f0b:elements-compounds-and-symbols-of-elements/v/compounds-and-chemical-formulas 2025-07-26T11:13:36.753644743Z यौगिक एवं रासायनिक सूत्र (Compounds and Chemical formulas) Some substances, like copper or gold, are pure elements. Others, like water (H₂O), are compounds—made from two or more elements in fixed ratios, chemically bonded. Each compound has a unique formula, like CO₂ for carbon dioxide, representing its specific atomic arrangement. Compounds form molecules, tightly bonded units, creating an incredible diversity of substances in nature. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/e3e4181e-5236-462c-82b7-64099d59b95c_1280_720_base.png यौगिक एवं रासायनिक सूत्र (Compounds and Chemical formulas) Some substances, like copper or gold, are pure elements. Others, like water (H₂O), are compounds—made from two or more elements in fixed ratios, chemically bonded. Each compound has a unique formula, like CO₂ for carbon dioxide, representing its specific atomic arrangement. Compounds form molecules, tightly bonded units, creating an incredible diversity of substances in nature. https://cdn.kastatic.org/ka-youtube-converted/yArCGVOKw7o.mp4/yArCGVOKw7o.mp4 361 परमाणु और अणु (Atoms and molecules)