Matter is anything that has mass and volume. Matter exists in three states. They are solid, liquid and gas. This note provides information about matter, elements and symbols.
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A compound is a substance formed when two or more atoms of different elements combine together in a fixed proportion by weight. An atom can be defined as the smallest particles of an element which can take part in a chemical reaction. This note provides information about compound, atom, molecule, molecular formula and change in matter.
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