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A substance in which all atoms are alike, which cannot be chemically or physically separated
A change that alters the form or appearance of a substance, but does not make the materials in to another substance
A quality of a substance that never changes and can be used to identify the substance
5 Signs of a Chemical Reaction
Change of color, change in temperature, precipitation, production of gas, change in properties (odor, light)
A substance made of crystals in which the particles are arranged in regular repeating patterns
Building blocks of all matter, smallest particle of an element that still retains properties of that element
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