Chemistry

=Unit 1: Chemistry Unit (February) =
 * Outline of Topics We Covered:
 * Reviewed Grade 9 Chemistry Topics
 * matter, elements, compounds, mixtures, solutions, physical & chemical properties, physical & chemical changes, 5 ways of telling that a chemical change has taken place
 * The Periodic Table of Elements
 * Mendeleev, Periodic Law, groups/families, periods, valence electrons, alkali metals, alkaline earth metals, halogens, noble gases, metals & nonmetals, atoms, protons, neutrons, electrons, atomic number, atomic mass, octet, ion, cation, anion
 * The analogy of an atom video we watched in class: []
 * Naming and Creating Formulas
 * Ionic and Molecular Compounds
 * Ionic - metal + nonmetal - name using regular name of metal, then nonmetal ends in "-ide" (ex: sodium chloride)
 * Molecular - nonmetal + nonmetal - use the subscripts to name the compound (ex: carbon dioxide, carbon monoxide)
 * __Special cases:__ Multivalent Metals and Polyatomic Ions
 * Multivalent metals - metals that have more than 1 type of ion; use Roman numerals to name (ex: copper (II) oxide)
 * Polyatomic ions - a group of elements that tend to bond together and carry an overall charge (ex: sodium phosphate)
 * Types of Chemical Reactions
 * <span style="font-family: Georgia,serif; font-size: 130%;">Synthesis (element + element --> compound) *aka combination
 * <span style="font-family: Georgia,serif; font-size: 130%;">Decomposition (compound --> element + element)
 * <span style="font-family: Georgia,serif; font-size: 130%;">Single Displacement (element + compound --> element + compound)
 * <span style="font-family: Georgia,serif; font-size: 130%;">Double Displacement (compound + compound --> compound + compound)
 * <span style="font-family: Georgia,serif; font-size: 130%;">Balancing Chemical Reactions
 * <span style="font-family: Georgia,serif; font-size: 130%;">Use coefficients to ensure that all matter is conserved during the reaction (Law of Conservation of Mass)