Chemical and physical changes

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Atom
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Small particle that is a building block of matter
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Compound
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Substance containing atoms of two or more different elements chemically bonded together
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Dissolve
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To form a solution by mixing evenly
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element
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Substance that consists of just one type of atom
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Heterogeneous mixture
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Type of mixture in which the individual substances are not evenly mixed
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Homogeneous mixture
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Type of mixture in which individual substances are evenly mixed
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Matter
Matter
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Anything that has mass that takes up space
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Mixture
Mixture
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Matter that can vary in composition
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Substance
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matter with a composition that is always the same
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Unique
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having nothing else like it
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Physical property
Physical property
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Characteristic of matter that you can observe or measure without changing the identity of the matter
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Mass
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The amount of matter in and object
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Density
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The mass per unit volume of a substance
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Solubility
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The ability of one substance to dissolve in another
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Physical change
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A change in the size, shape ,form or state of matter in which the matters identity stays the same
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Chemical property
Chemical property
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A characteristic of matter that can be observed as it changes the different types of matter
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Chemical changes
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A change in matter in which the substances that make up the matter change into other substances with new physical and chemical properties
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Concentration
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The amount of substance in a certain volume
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Chemical bond
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a force that holds two or more atoms toughter
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compound
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A substance made up of atoms of two or more different elements joined by chemical bonds
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valence electron
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the outermost electron of an atom
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chemical formula
chemical formula
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a group of chemical symbols and numbers that represent the elements and the number of atoms of each element that make up a compound

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