click below
click below
Normal Size Small Size show me how
Unit 4/5 Vocab words
Term | Definition |
---|---|
Oxidation Number | The number of electrons that must be added to or removed from an atom in a combined state to concert the atom into the elemental form. |
Oxidation-Reduction Reaction | Any chemical change in which one species is oxidized (loses electrons) and another species is reduced (gains electrons); also called redox reaction. . |
Reactants | A substance or molecule that participates in a chemical reaction. |
Products | A substance that forms 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 substances. |
Synthesis Reaction | A reaction in which two or more substances 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 ions of two compounds exchange places in an aqueous solution to form two new compounds. |
Monatomic ions | An ion formed from a single atom. |
Nomenclature | 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 compound in terms of the relative numbers and kinds of atoms in the simplest ratio. |
Chemical Equation | A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products. |
Word Equation | An equation in which the reactants and products in a chemical reaction are represented by words. |
Formula Equation | A representation of the reactants and products of a chemical reaction by their symbols or formulas. |
Reversible Reaction | A chemical reaction in which the products re-form the original reactants. |