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14 Cards in this Set
- Front
- Back
Synthesis Reaction
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When two or more substances combine to form a single substance
Example: sodium + chlorine = sodium chloride |
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Decomposition Reaction
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When a single compound breaks down into two simpler substances
Example: Sugar = water + carbon |
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Combustion Reaction
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When a substance rapidly combines with oxygen to form one or more oxides and releases energy
Example: methane gas in air (heat from spark = catalyst) |
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Double-Replacement Reaction
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The positive and negative portions of two ionic compounds interchange
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Single-Displacement Reaction
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When a substance takes the place of another in a compound
Example: Silver & Copper Solution = copper + silver nitrate |
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Acid-Base Reaction
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Reactants: acid and base
Products: just makes certain characteristics less/more visible Example: Potassium Hydroxide + Hydrochloric Acid |
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What is a Chemical Reaction?
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when one or more substances change into new substances
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Reactants
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the starting (original) substances
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Products
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the formed (new) substances
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Chemical Property
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the ability of a substance to undergo a chemical reaction and form new substances
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3 Ways to know that a chemical reaction took place
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1) energy is either absorbed or given off
2) change in color/odor 3) production of a gas/solid from a liquid |
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Are chemical changes reversible?
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no (iron + oxygen = rust ; rust - oxygen ≠ iron)
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Conservation of Mass
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in any physical or chemical change, mass is neither created nor destroyed
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Precipitation Reaction
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the formation of a solid in a solution or inside another solid during a chemical reaction
Example: Potassium Chromate + Silver Nitrate = red precipitate |