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Definition
| A shorthand way to represent the composition of a pure substance. |
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Definition
| Represent the changes that take place in those compositions as the substances react. |
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Definition
| Numbers below the line that tell how many of each kind of atom are present. |
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Definition
| Three-dimensional representations that are used throughout the book to show the relative sizes of atoms or ions in chemical bonding. |
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Term
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Definition
| Show only the relative proportion of atoms in a molecule. |
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Term
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Definition
| A chemist who decomposes the sample, measures the amounts of its individual elements and gives us an exact formula for it. |
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Definition
| Tell how many electrons an element is likely to gain, lose, or share as it bonds to other atoms. |
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Term
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Definition
| Each have 1 valence electron. |
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Term
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Definition
| Each have 2 valence electrons. |
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Term
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Definition
| On the opposite side of the periodic table, each have 8 valence electrons. |
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Term
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Definition
| Have a tendency to gain 1 electron per atom in order to complete their valence octets. |
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Term
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Definition
| Have 6 valence electrons. |
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Term
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Definition
| Ions composed of two or more atoms that are covalently bonded and acts as a single particle. |
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Term
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Definition
| The formulas on the left of the arrow. |
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Term
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Definition
| The formulas on the right side of the arrow. |
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Term
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Definition
| The numbers is front of the formulas. |
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Term
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Definition
| Reactions that combine two or more substances into one more complex compound. |
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Term
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Definition
| Reactions that decompose, or take apart, the formula units or molecules of a substance. |
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Term
| Single-replacement reaction (single displacement) |
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Definition
| One element in an existing compound is replaced by another element. |
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Term
| Double-replacement reaction (double displacement) |
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Definition
| Two ionic compounds swap cations and anions with each other. |
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Definition
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Term
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Definition
| Solids that cannot be dissolved in water and settles to the bottom of the solution. |
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Definition
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Term
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Definition
| Reactions that give off heat energy. |
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Term
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Definition
| Reactions that absorb heat energy. |
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