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a quality or condition of a substance that can be observed or measured without changing the substance's composition
properties of pure substances that can be measured and expressed numerically; fp, mp, d, etc.
law of conservation of mass
Mass is neither destroyed nor created during ordinary chemical reactions or physical changes
a substance formed by the chemical combination of two or more elements in definite proportions
law of conservation of energy
the law that states that energy cannot be created or destroyed but can be changed from one form to another
heat of vaporization
the amount of heat energy required to convert one gram of a substance from a liquid to a gas
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