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 a branch of phyeical science, is the study of the composition, structure, properties and change of matter.Chemistry is chiefly concerned with atoms and their interactions with other atoms - for example, the properties of the chemical bonds formed between atoms to create chemical compounds. As well as this, interactions including atoms and other phenomena - electrons and various forms of energy—are considered, such as photochemical reactions, oxidation-reduction reactions, changes in phases of matter, and separations of mixtures....
Chemistry is sometimes called "the central science" because it bridges other natural sciences like physicsgeology andbiology with each other.
 Chemistry is a branch of physical science but distinct from physics.
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