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Vocabulary review for chapter 7, chemical formulas

polyatomic ion

An ion made of more than one atom.

formula unit

A compound's formula represents a definite amount of that compound called a ___.


A ___ is a neutral particle formed when neutral atoms combine.

chemical symbol

A ___ is a shorthand representation of an element.


An atom that has become electrically charged.

empirical formula

The simplest whole-number ratio of atoms or ions in a compound is indicated by a(n) ___.

binary compound

A ___ is any compound containing only two elements.

ionic compound

A compound composed of charged particles is called a(n) ___

chemical formula

A(n) ___ is a combination of symbols representing the composition of a compound.

molecular formula

A formula for a compound that exists as a molecule is called a(n) ___.

oxidation number

The charge on a monatomic ion is known as its ___.


a negatively charged ion


a positively charged ion

Monatomic ion

an ion made out of one type of element only

polyatomic ion

an ion made out of more than 1 type of element. It is a molecule has has become charged.

oxide, O2-

The name and symbol of the oxygen ion


The proper formula if you try to combine aluminum and oxide

sodium oxide

proper name for Na2O

Iron (II) Sulfide

proper name for FeS (since Fe has more than 1 oxidation number)

Uranium Hexafluoride

name of UF6 (using the prefix method for binary molecules)

Hydrochloric acid

Name of this acid - HCl. (acids get a different set of naming rules

Nitric Acid

Name of this acid - HNO3. (acids get a different set of naming rules

Sulfuric Acid

Name of this acid - H2SO4. (acids get a different set of naming rules


Name this organic compound - C7H16 (remember organics gets its own set of naming rules)


How many formula units are shown in the following - 6H2SO4


What is the empirical formula that goes with the following molecular formula - C8H18

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