Rules for Naming Binary Compounds and Writing Formulas  Determine if the compound is ionic or covalent.  If the compound is composed of non-metals it will be covalent.  Click here for a periodic table in which the non-metals are green, the pink elements are metals, and the blue elements are metalloids. (If necessary review the lesson on the periodic table)periodic table  If the compound has a metal it is ionic and that lesson will be on the next program.

Rules for Naming Binary Compounds and Writing Formulas » Constructing a covalent compound’s name » Name a covalent compound using prefixes, the only exception is not using “mono” with the first element.prefixes » The end of the last element’s name is changed to “ide” (such as oxide in carbon monoxide) » CO would be carbon monoxide (correct) vs. monocarbon monoxide (incorrect). » CO 2 would be carbon dioxide. » N 2 O 5 would be dinitrogen pentoxide.

Rules for Naming Binary Compounds and Writing Formulas » Constructing a covalent compound’s name » Practice » NO » SF 6 » SO 3 » CCl 4 » Check your self Check your self

Rules for Naming Binary Compounds and Writing Formulas » Constructing a covalent compound’s formula » Write the symbol for the first element in the name. » Put the number associated with the prefix as a subscript after the element. » Do the same steps for the second element. » A name such as tetraphosphorous decaoxide would have a formula of P 4 O 10.

Rules for Naming Binary Compounds and Writing Formulas » Constructing a covalent compound’s formula » Practice » Carbon dioxide » Phosphorous trichloride » Diiodine septaoxide » Disulfur monoxide » Check your self Check your self

Rules for Naming Binary Compounds and Writing Formulas » Constructing a covalent compound’s formula » Practice » Carbon dioxideCO 2 » Phosphorous trichloridePCl 3 » Diiodine septaoxide I 2 O 7 » Disulfur monoxide S 2 O » Check your self Check your self

Rules for Naming Binary Compounds and Writing Formulas Test for unit Complete the assignment on this link and return it to the instructor (the due date will be specified by your instructor). AssessmentAssessment Find the label from a food or toiletry item and indicate the names or formula’s for the covalent compounds found on it. Send the label and the list to your instructor when you return your exam. Click here to Exit this lesson

Rules for Naming Binary Compounds and Writing Formulas » Practice » NOnitrogen monoxide » SF 6 sulfur hexafluoride » SO 3 sulfur trioxide » CCl 4 carbon tetrachloride

Rules for Naming Binary Compounds and Writing Formulas

Prefixes for covalent compounds Monoone Hexasix DitwoSeptaseven TrithreeOctaeight TetrafourNonanine PentafiveDecaten