Warm Up What type of ion does Calcium form? Anion or Cation

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Presentation transcript:

Warm Up What type of ion does Calcium form? Anion or Cation Does it gain or loose electrons and how many? Write the formula for the ion that calcium forms:

Write the individual ions and then the chemical formula for Calcium iodide: Write the individual ions and then the chemical formula for Calcium phosphide:

6.5

Molecular Compounds Composed of two non-metals that share electrons Prefixes help to distinguish the amount of each element present in a compound Naming covalently bonded elements requires you to indicate the amount of each element present!!! (There are no ions to indicate how many of each element there is!!!)

Prefixes to memorize: mono- 1 hexa- 6 di- 2 hepta- 7 tri- 3 octa- 8 tetra- 4 nona- 9 penta- 5 deca- 10

Naming (Nomenclature) Rules 1st- Check to see if the compound is ionic or covalent (metal + nometal) (two non-metals) 2nd - If 2 nonmetals then use the following set up.

Naming (Nomenclature) Rules Example: N2O : Dinitrogen monoxide 2 nitrogens 1 oxygen Numeric Prefix + name 1st element numeric prefix + name 2nd element+ide ** No prefix is given to the first element only if there is only 1 of that element present in the compound!!!** CO : Carbon monoxide

Now it’s your turn!!! Name the following: CCl4 P2O5 N2O3 Write the chemical formula for the following: Carbon dioxide Dichlorine heptoxide

Is it Ionic or Covalent??? Ionic Covalent Metal + nonmetal Names have no numeric prefixes 2 nonmetals Names will have numeric prefixes

Ionic or covalent??? Sodium Chloride Carbon tetrachloride Na2O NO

Reminder: When naming a chemical using the formula given Identify if it is ionic or covalent Use the naming rules Writing formulas 1. Identify if it is ionic or covalent based on the name 2. Ionic compounds will require you to figure out charges and cross multiply. Covalent molecules give you the amounts in the name

Name the following chemicals N2F2 AlCl3 ClO4 K2S S2F10 Dinitrogen difluoride Aluminum chloride Chlorine tetraoxide Potassium sulfide Disulfur decaflouride

Write the formula for the following chemicals Lithium sulfide Diphosphorus trioxide Li2S P2O3

6.6 Naming Common Acids Acids produce H+ ions when dissolved in water Binary Acids: H+ ions paired with an Anion (-) Naming: HCl 1) Prefix hydro- 2) anion – suffix – ic chlorine  chloric 3) Add term acid Example: HCl hydrochloric acid

Your Turn!! Name: H2S HBr Write the formula: Hydrofluoric acid Hydrophosphoric acid

Oxyacids H+ ion and an oxyanion Oxyanions: a polyatomic ion that contains oxygen Naming: Use the polyatomic ion name only! Change suffix of the polyatomic ion according to the following rules: ate ending turns to – ic NO3- HNO3 nitric acid ite ending turns to – ous NO2- HNO2 nitrous acid ** see list on page 160** Be familiar with those acids

Time to Practice !!!