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Chemical
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Any suubstance that has a defined composition
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Chemical reaction
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The process by which one or more substances change to produce one or more different substances
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States of matter
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The physical forms of matter, which are solid liquid, gas and plasma
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Reactant
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A substance or molecule that participates in a chemical reaction
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Product
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A substance that forms in a chemical reaction
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Matter
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Anything that has mass and takes up space
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Volume
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A measure of the size of a body or region in three dimensional space
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Mass
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A measure of the amount of matter in an object'a fundamental property of an object that is not affected by the forces that act on the object, such as the gravitaional force
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Weight
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A measure of the grvitational force exerted on an object'its value can change with the location of the object in the universe.
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Quantity
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Something that has a magnitude, size or amount
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Unit
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A quantity adopted as a standard of measurement
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Conversion factor
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A ratio that is derived from the equality of two differnt units and that can be used to convert from one unit to the other
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Physical property
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A characteristic of a substance that does not involve a chemical dhange, such as density, color, or hardness
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Density
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The ratio of the mass of a substance to the cvolume of the substance'often expressed as grams per cubic centimeter for solids, and liquids and as grams per litter for gases
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Chemical property
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A property of matter that describes a substance's ability to participate in chemical reactions
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