bonding/nomenclature
DESCRIPTION
Bonding/Nomenclature. Review. How do ions form?. Cations Gain or lose? Ionization energy? Electron affinity? Anions Gain or lose? Ionization energy? Electron affinity?. Write chemical formulas. Criss-cross charges. Ionic compounds are neutral...the charges have evened out. - PowerPoint PPT PresentationTRANSCRIPT
Bonding/NomenclatureBonding/Nomenclature
ReviewReview
How do ions form?How do ions form? Cations
Gain or lose? Ionization energy? Electron affinity?
Anions Gain or lose? Ionization energy? Electron affinity?
Cations Gain or lose? Ionization energy? Electron affinity?
Anions Gain or lose? Ionization energy? Electron affinity?
Write chemical formulas.Write chemical formulas.
Criss-cross charges. Ionic compounds are neutral...the
charges have evened out. Formula unit = empirical formula =
simplest ratio of atoms
Criss-cross charges. Ionic compounds are neutral...the
charges have evened out. Formula unit = empirical formula =
simplest ratio of atoms
Name ionic compounds.Name ionic compounds.
Name the cation. Is it a transition metal, Sn, or Pb?
Name the anion. Is it a polyatomic ion?
WATCH OUT FOR REDUCED FORMULAS! TRICKY!!! Example: Pb(SO4)2, CuO, Cu2O
Name the cation. Is it a transition metal, Sn, or Pb?
Name the anion. Is it a polyatomic ion?
WATCH OUT FOR REDUCED FORMULAS! TRICKY!!! Example: Pb(SO4)2, CuO, Cu2O
Properties of Ionic Compounds
Properties of Ionic Compounds
Brittle Dissociates in water Conduct electricity when dissolved Solid at room temperatures HIGH melting points Crystals (ionic crystal = unit cell)
Brittle Dissociates in water Conduct electricity when dissolved Solid at room temperatures HIGH melting points Crystals (ionic crystal = unit cell)
Naming Covalent Compounds
Naming Covalent Compounds
Use prefixes! No mono- on the first word. Always end in -ide.
Use prefixes! No mono- on the first word. Always end in -ide.
Writing Formulas for Covalent CompoundsWriting Formulas for Covalent Compounds
Prefixes tell the subscripts. NO CRISS-CROSSING NEEDED! 8-)
Prefixes tell the subscripts. NO CRISS-CROSSING NEEDED! 8-)
Drawing Lewis StructuresDrawing Lewis Structures
Total valence electrons Pair the electrons Set up the atoms and tie them
together. Place remaining pairs on terminal
atoms and work toward the central. Make sure every atom is satisfied.
Total valence electrons Pair the electrons Set up the atoms and tie them
together. Place remaining pairs on terminal
atoms and work toward the central. Make sure every atom is satisfied.
Answering Questions about Lewis StructuresAnswering Questions
about Lewis Structures How many single bonds? How many double bonds? How many non-bonded electron
pairs? How many areas of electron
density? What is the VSEPR shape?
How many single bonds? How many double bonds? How many non-bonded electron
pairs? How many areas of electron
density? What is the VSEPR shape?
Properties of Covalent Compounds
Properties of Covalent Compounds
Does not dissociate in water Does not conduct electricity even
when dissolved Lower melting point Not always solid at room temp Not crystals...CALLED MOLECULES
Does not dissociate in water Does not conduct electricity even
when dissolved Lower melting point Not always solid at room temp Not crystals...CALLED MOLECULES