Ionic bonding Day #2

Learning goals We are learning to identify ionic compounds. We are learning to name ionic compounds. We are learning to write chemical formulas for ionic compounds.

Recall An ionic bond occurs between a metal and a non-metal. The metals lose electrons to become cations. The non-metals gain electrons to become anions. The resulting compound is held together electrostatically. The overall charge of an ionic compound is zero.

Example #1 Mg2+ O2- Ca2+ Cl- Na+ F- Mg2O2 CaCl2 MgO NaF Determine the chemical formula for each compound below. a) Sodium Fluoride b) Magnesium Oxide c) Calcium Chloride Step #1: Write the ions Mg2+ O2- Ca2+ Cl- Na+ F- Step #2: Criss-Cross Charges Mg2O2 CaCl2 Step #3: Write the Formula & reduce (if necessary) MgO NaF

Try this Name the following ionic compounds: a) NaBr b) LiF c) MgBr2 d) AlI3 e) K2S f) AL2O3

Try this Use the criss-cross method to determine the chemical formula and name of the following: a) lithium and fluorine b) beryllium and fluorine c) magnesium and sulfur d) aluminum and oxygen e) hydrogen and phosphorus

Learning goals We are learning to identify ionic compounds. We are learning to name ionic compounds. We are learning to write chemical formulas for ionic compounds.