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ATTENTION ALL HILLTOPERS ! CHEMISTRY NOTECARDS !! =]

Oxidation Numbers

used to keep track of electrons during bonding. (A number that reflects the charge that an atom in a compound would have if all the bonding electrons are arbitrarily assigned to the most electronegative element.

Peroxides

a class of compounds in which two oxygens are bonded together. (A compound that contains an oxygen-oxygen bond)

Nomenclature

System of names that allows all compounds to be named according to a common set of rules. (A system or set of names used by a branch of learning, such as the system of names for compounds in chemistry.)

Flow Chart

A diagram showing the progress of work through a sequence of operations.

Greek prefix system

A system of prefixes used to indicate the number of atoms in a binary covalent compound or the number of water molecules in a hydrate. (Example: Dinitrogen Pentoxide)

Binary Compound

A compound that contains only two kinds of elements. (ionic and named according to each of the two ions that are involved.)

Oxyanion

An anion composed of oxygen and one other element.

Polyatomic Compound

A compound that contains at least three different elements & do not use prefixes. (Example: NaNO)

Stock System

A convention used to show the oxidation state of a metal ion in which a roman number is placed after the elements name to show the oxidation number. (Example: CuCl(lil 2) is Copper (II) Chloride.)

Roman Numeral System

Aka Stock System

Hydrate

compounds that have water molecules in their crystalline structures. (Na2CO3 * 7H2O)

Anhydrous

designates a compound that has no water of hydration in its crystalline structure. (No * H2O)

Binary Acid

Two-element compounds that show hydrogen as the first element in their formulas.

Ternary Acid

contain three elements: Hydrogen, Oxygen, and another nonmetal.

Mole

the amount of substance contained in 6.022x10(23 power).

Avogradro's Number

6.022x10(23 power).

Gram-Atomic Mass

The mass of a mole of atoms.

Gram-Molecular Mass

The mass of a mole of molecules.

Gram-Formula Mass

The mass of a mole of formula units in a ionic compound bond.

Structural Formula

Shows the types of atoms involved, the exact composition of each molecule, and the arrangement of chemical bonds.

Molecular Formula

Shows the types of atoms involved and the exact composition of each molecule.

Empirical Formula

Tell what elements are present and give the simplest whole-number ratio of atoms in a compound.

Percent Composition

Describes that mass composition of a compound.

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