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18 Cards in this Set
- Front
- Back
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Substance |
matter that is always made up of the same combination of atoms |
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Element |
matter made of only one type of atom |
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Compound |
matter made of atoms of two or more elements that are chemically bonded together |
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Mixture |
two or more substances that are physically blended but are not chemically bonded together |
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Heterogeneous Mixture |
mixture in which substances are not evenly mixed |
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Homogeneous Mixture |
mixture in which two or more substances are evenly mixed on the atomic level but not bonded together |
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Solvent |
the substance that exists in the greatest quantity in a solution |
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Solute |
all other substances in a solution (one that dissolves) |
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Concentration |
the amount of a particular solute in a given amount of solution |
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Solubility |
the maximum amount of solute that can dissolve in a given amount of solvent at a given temperature and pressure. |
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Saturated Solution |
a solution that contains the maximum amount of solute the solution can hold at a given temperature and pressure |
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Unsaturated Solution |
a solution that can still dissolve more solute at a given temperature and pressure |
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Acid |
substance that produces a hydronium ion (H3O+) when dissolved in water |
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Hydronium ion |
is a positively charged ion formed when an acid dissolves in water |
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Base |
substance that produces hydroxide ions (OH-) when dissolved in water |
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Hydroxide ion |
consists of an oxygen and a hydrogen atom held together by a covalent bond |
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pH |
inverse measure of the concentration of hydronium ions (H3O+) in a solution |
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Indicator |
a compound that changes color at different pH values when it reacts with acidic or basic solutions |
