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Unit 5
Question | Answer |
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Oxidation Number | the number of electrons that must be added to or removed from an atom in a combined state to convert into the elemental |
Oxidation-Reduction Reaction | any chemical change in which one species is oxidized(loses electrons) and another species is reduced(gains electrons) |
Reactants | a substance or molecule that participate in a chemical reaction |
Coefficients | a small whole number that appears as a factor in front of a formula in a chemical equation |
Law of conservation of Mass | the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes. |
Combustion reaction | the oxidation reaction of an element or compound,in which energy as heat is released |
Decomposition reaction | a reaction in which a single compound breaks down to form two or more simpler substance |
Synthesis reaction | a reaction in which tow or more substance combine to form a new compound |
single displacement reaction | a reaction in which one element or radical takes the place of another element or radical in a compound |
double displacement reaction | a reaction in which the ion of two compounds exchange places in an aqueous solution to form two new compound |
Monatomic ions | an ion formed from a single atom |
nomeclature | a naming system |
Oxyanions | a polyatomic ion that contains oxygen |
formula mass | the sum of the average atomic masses of all atoms represented in the formula of any molecule,formula unit,or ion |
percent composition | the percentage by mass of each element in a compound |
empirical formula | a chemical formula that shows the composition of a |
chemical equation | a representation of chemical reaction that uses symbols to show the relationship between the reactants and the product |
word equation | a equation in which the reactants and the product in a chemical reaction are represented by words |
formula equation | a representation of the reactants and product of a chemical reaction by their symbols or formula |
reversible reaction | a chemical reaction in which the product re-form the original reactants |