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Chem I - Ch 5 Vocab

QuestionAnswer
acid a molecular compound that dissolves in solution to form H+ ions. Acids have the ability to dissolve some metals and will turn litmus paper red
atomic element an element that exists in nature with single atoms as the basic unit
ball-and-stick model representation of atoms as balls and chemical bonds as sticks
binary acid an acid containing only hydrogen and a nonmetal
binary compound a compound containing only two different kinds of elements
chemical formula a way to represent a compound. indicates the elements present in the compound and the relative number of atoms of each element
empirical formula a formula for a compound that gives the smallest whole-number ratio of each type of atom
formula mass the average mass of the molecules(or formula units) that compose a compound.
formula unit the basic unit of ionic compounds; the smallest electrically neutral collection of cations and anions that compose the compound
ionic compound a compound formed between a metal and one or more nonmetals
law of constant composition a law stating that all samples of a given compound have the same proportions of their constituent elements
molecular compound a compound formed from two or more nonmetals; have distinct molecules as their simplest identifiable units
molecular element an element that does not normally exist in nature with single atoms as the basic unit; these elements usually exist as diatomic molecules - 2 atoms of that element bonded together - as their basic units
molecular formula a formula for a compound that gives the specific number of each type of atom in a molecule
molecular model three dimensional representation of molecules; to represent compounds
oxyacid an acid containing hydrogen, a nonmetal, and oxygen
oxyanion an anion containing oxygen; most polyatomic ions are oxyanions
polyatomic ion an ion composed of a group of atoms with an overall charge
space-filling model atoms fill the space between each other to more closely represent our best idea for how a molecule might appear to visible scale
structural formula a two-dimensional representation of molecules that not only shows the number and type of atoms, but also how the atoms are bonded together.
transition metals the elements in the middle of the periodic table; lose electrons in their chemical reactions
Created by: droesener