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| Metal and nonmetal formed by ionic bonds |
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| two nonmetals formed by covalent bonds |
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Chromium (II) 2+
Chromium (III) 3+ |
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Cobalt (II) 2+
Cobalt (III) 3+ |
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Nickel (II)2+
Nickel (III)3+ |
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Copper (I) 1+
Copper (II) 2+ |
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Mercury (I) 1+
Mercury (II) 2+ |
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| two or more reactants form a single product |
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| often use a catalyst; single compound breaks down into two or more simpler substances |
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| Single-replacement reaction |
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| One element displaces another. A more active element that is higher on the activity series which displaces an element lower on the activity series. |
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| Double-replacement reaction |
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Definition
| when two substances in aqueous solution switch places. An anion of one substance changes with another. |
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| When an acid and base react to form a salt |
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| How do you know a chemical reaction has occured? |
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Definition
| A gas is produced; a precipitate is formed; a color change; an energy changed is noted |
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| percent of composition equasion |
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| mass of known substace/mass of whole substance X 100= % of substance in sample |
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