naming and writing chemical formulas test Flashcards
ionic bond
-between a metal and a nonmetal
-forms a formula unit
-transferring electrons
covalent bond
-between nonmetal and nonmetal
-forms a molecule/ molecular compound
-sharing electrons
ionic charge of group 1
+1
ionic charge of group 2
+2
ionic charge of group 13
+3
ionic charge of group 14
no charge, doesn’t form ions
ionic charge of group 15
-3
ionic charge of group 16
-2
ionic charge of group 17
-1
ionic charge of group 18
no charge, doesn’t form ions
when ions have a positive charge are they gaining or losing electrons?
losing
when ions have a negative charge are they gaining or losing electrons?
gaining
what are the three types of ionic compounds you can name?
-binary
-multivalent
-ternary
binary compounds
-ionic compound (M and NM or cation and anion)
-2 elements
how do you name binary compounds?
-use the suffix “ide”
-keep the full name of the cation
-ex. magnesium chloride
how do you write the chemical formula of binary compounds?
-cross charges
-simplify
-ex. Mg 2+ Cl- is MgCl2
multivalent compounds
-ionic compound
-transition metal and NM
how do you name multivalent compounds?
-use roman numerals to indicate the charge of the transition metals
-only exceptions are silver and zinc
charge of silver
+
charge of zinc
2+
ternary compounds
-ionic compound
-polyatomic ions
how do you name ternary compounds?
-regular names of both polyatomic ion and other element/polyatomic ion
how do you write the chemical formula for ternary compounds?
-cross charges
-use parentheses to keep polyatomic ions together if they have another charge crossed down to them
-ex. Ca3(PO4)2
how do you name covalent compounds?
-use prefixes always on the last element
-end with “ide”
-use prefixes if theres more than one on the first element
-ex. P4O10 tetraphosphorous decoxide
