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Chemistry; Ch. 6
Crystal Cathedral High School Sophomores (Semester 1; Ms. Rose)
Question | Answer |
---|---|
Product | A new substance formed when reactants undergo chemcial change. |
Reactant | A substance that undergoes a reaction. |
Diatomic | An element found naturally paired with itself. (I, O, F, Cl, Br, H) |
Aqueous Solution | A solution in which the solvent is water. |
Subscript | Numbers that tell you how many elements are present in the compound. |
Coefficient | A number placed in front of the parts in a chemical equation to indicate how many are involved; always a positive whole number. |
Equilibrium | Term for a system where no net change occurs in the amount of reactants or products. |
Inhibitor | A substance that slows down a reaction. |
Catalyst | A substance that speeds up the rate of a reaction without being used up itself or permanently changed. |
Enzyme | A biological catalyst. |
Concentration | The amount of a substance present in a unit volume. |
Combustion | Term for a reaction in which a substance rapidly combines with oxygen to form one or more oxides. |
Synthesis | The name applied to a reaction in which two or more substances combine to form a single product. |
Decomposition | The name applied to a reaction where a compound breaks down into two or more simpler substances. |
Single Displacement | A type of reaction where one element takes the place of another in a compound. |
Double Displacement | A type of reaction where the positive and negative portions of two ionic compound are interchanged; at least one product must be water or a precipitate. |
How To Identify That A Chemical Reaction Is Taking Place | Color changes, precipitation, energy changes, odor changes, gas release. |
Products | On the left of the arrow. |
Reactants | On the right of the arrow. |
H(3) | Subscript. |
2Na | Coefficient. |
Synthesis Reaction | Two or more reactants combine to form a single product. |
Decomposition Reaction | Reactant is broken down into two or more products. |
Single Displacement | One molecule takes place of another molecule. |
Double Displacement | Positive portions of any two molecules change places. |
Combustion Reaction | Substance combines with oxygen to form carbon dioxide and an oxide. |
How To Get More Of A Reactant/Product In A Reaction | Increase the concentration. |
Four Ways To Change The Equilibrium | Remove products. |
Cation | Positive + |
Anion | Negative - |