what is compound ? define it
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When two or more elements are added together by chemical bond in a certain proportion according to weight, the substance is called a chemical compound . For example, water , simple salt , sulfuric acid, etc. are chemical compounds.
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A compound is a substance formed when two or more elements are chemically joined. Water, salt, and sugar are examples of compounds. When the elements are joined, the atoms lose their individual properties and have different properties from the elements they are composed of. A chemical formula is used a quick way to show the composition of compounds. Letters, numbers, and symbols are used to represent elements and the number of elements in each compound.
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