| A | B |
|---|
| Activity Series of Metals | a list of elements in order of decreasing activity/used to determine if a single replacement reaction will take place |
| Anion | any atom or group of atoms that has gained electrons and has a negative charge |
| Atom | the smallest part of an element that retains its identity in a chemical reaction |
| Balanced Equation | a chemical equation in which mass is conserved/ each side of the equation has the same number of atoms of each element |
| Cation | any atom or group of atoms that has lost electrons and has a positive charge |
| Coefficient | a small whole number that appears in front of a formula in a balanced chemical equation |
| Combination Reaction | a chemical change in which two or more substances react to form a single new substance, also called a Synthesis reaction |
| Combustion Reaction | a chemical change in which a hydrocarbon reacts with oxygen/ often producing carbon dioxide and water as well as energy in the form of heat and light |
| Decomposition Reaction | a chemical change in which a single element is broken down into two or more simpler products |
| Diatomic Molecule | one of 7 elements that cannot exist as a lone atom |
| Double Replacement Reaction | a chemical change that involves an exchange of positive ions between two compounds |
| Electrons | a negatively charged subatomic particle |
| Element | the simplest form of matter that has a unique set of properties/an element cannot be broken down into simpler substances by chemical means. |
| Formula (chemical ) | shows the kinds and numbers of atoms in the smallest representative unit of a substance |
| Ion | an atom or group of atoms that has a positive or negative charge. |
| Ion charge | the charge of the ion |
| Ionic Compound | a compound composed of a cation and an anion. |
| Metal | one of a class of elements that are good conductors of heat and electric current, is lustrous (shiny), maleable, and ductile |
| Molecular Compound | a compound that is composed of molecules |
| Molecule | a neutral group of atoms joined together by covalent bonds |
| Neutralization Reaction | a reaction in which an acid and a base react in an aqueous solution to produce a salt and water |
| Nonmetal | an element that tends to be a poor conductor of heat and electric current/nonmetals generally have properties opposite to those of metals |
| Oxidation Number | a positive/negative number assigned to an atom (in a compund)/ it is often the charge an atom has |
| Polyatomic Ion | a tightly bound group of atoms that behaves as a unit and has a positive or negative charge |
| Product | a substance produced in a chemical reaction |
| Reactant | a substance present at the start of a reaction |
| Reactive | ability of an element to be involved in chemical reactions |
| Salt | any (ionic) compound produced from the reaction of an acid and a base |
| Single Replacement Reaction | a chemical change in which one element replaces a second element in the compound |
| Solution | consists of solutes dissolved in a solvent/a homogeneous mixture |
| Transition metal | one of the Group B elements in which the highest occupied s sublevel and a nearby d sublevel generally contain electrons |
| Type of Reaction | the different results from the different reactions |
| Word Equation | a chemical equation in which the chemical names are used to represent the reactants and products |
