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20 Cards in this Set
- Front
- Back
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Chemical change |
A change that produces one or more new substances with new chemical properties |
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Physical change |
A change in which the appearance of (physical properties) of a substance changes but its chemical properties stay the same |
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Energy level |
One of the spaces around the nucleus of an atom in which an electron moves |
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Ion
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An atom that has either a positive or negative charge
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Chemical bond |
The attractive force that holds atoms together |
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Chemical Formula |
Tells the kinds of atoms and how many of each kind are in a compound |
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Subscript
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A number in a formula that tells the number of atoms of an element in a compound
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Radicals
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a group if two or more atoms that act like one atom
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Chemical reaction |
A chemical change in which elements are combined or rearranged |
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Mixture |
A combination of substances in which no reaction takes place
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Dissolve |
To break apart |
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Solution |
A mixture in which one substance in dissolved in another |
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Solute |
The substance that is dissolved in a solution |
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Solvent |
A substance capable or dissolving one or more other substances |
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Chemical equation |
A statement that uses symbols, formulas, and numbers to stand for a chemical reaction |
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Reactant |
A substance that is altered in a chemical reaction |
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Product |
A substance that is formed in a chemical reaction |
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Law of conservation of matter |
Matter cannot be created or destroyed in chemical and common physical changes |
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Balance |
To keep the number of atoms the same on both sides of the equation |
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Coefficient |
A number placed before a formula in a chemical equation |
