Happy New Year!! DO NOW: 1. What is a positive ion called? – How does an atom become positively charged? 2. What is a negative ion called? – How does an atom become negatively charged? 3. What is an ion that is made up of more than one atom called? Happy New Year!! 1. What is a positive ion called? A cation – How does an atom become positively charged? An atom loses an electron 2. What is a negative ion called? An anion – How does an atom become negatively charged? An atom gains an electron 3. What is an ion that is made up of more than one atom called? A polyatomic ion Compound Naming Practice • Follow the directions on each slide • You may use your Reference chart sheet with Periodic table Name the following ionic compounds: 1) Li2S 2) AgNO3 3) NH4Cl Name the following ionic compounds: 1) Li2S 2) AgNO3 3… 3) NH4Cl 2… 1… Time’s Up! Name the following ionic compounds: 1) Li2S lithium sulfide 2) AgNO3 silver nitrate 3) NH4Cl ammonium chloride ERASE YOUR BOARD Name the following covalent compounds: 4) SiO2 5) C2S5 6) N6O Name the following covalent compounds: 4) SiO2 5) C2S5 6) N6O 3… 2… 1… Time’s Up! Name the following covalent compounds: 4) SiO2 silicon dioxide 5) C2S5 dicarbon pentasulfide 6) N6O hexanitrogen monoxide ERASE YOUR BOARD Write the formulas for the following ionic compounds: 7) Magnesium hydroxide 8) Beryllium phosphide 9) Copper (II) chloride Write the formulas for the following ionic compounds: 7) Magnesium hydroxide 8) Beryllium phosphide 9) Copper (II) chloride 3… 2… 1… Time’s Up! Write the formulas for the following ionic compounds: 7) Magnesium hydroxide Mg(OH)2 8) Beryllium phosphide Be3P2 9) Copper (II) chloride CuCl2 ERASE YOUR BOARD Write the formulas for the following covalent compounds: 10) Oxygen difluoride 11) Heptacarbon tetrahydride 12) Trixenon octabromide Write the formulas for the following covalent compounds: 10) Oxygen difluoride 11) Heptacarbon tetrahydride 12) Trixenon octabromide 3… 2… 1… Time’s Up! Write the formulas for the following covalent compounds: 10) Oxygen difluoride OF2 11) Heptacarbon tetrahydride C7H4 12) Trixenon octabromide Xe3Br8 ERASE YOUR BOARD