Chemical Bonding: Objectives:  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of ionic compounds.

Lewis Dot Structures: Chemical Stability Lewis Dot Structures: Chemical Stability 1.Will metals tend to gain or lose valence electrons to reach stability? Will non-metals tend to gain or lose valence electrons to reach maximum stability?

Chemical Bonding: Infinite Campus:  Electron Arrangement/Periodic Table Study Guides  Electron Arrangement/Periodic Table Exam  Predicting Charges for Stability Exit Slip Objectives:  Predict Charge and Size of Elements when become stable.  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of compounds.

Bell Ringer: Atomic Stability Bell Ringer: Atomic Stability 1.What is stability for an atom? 2.Why do many atoms prefer to be ions? 1.Identify if each element below is neutral, cation, or anion when stable. a.Sr b. Br c. Kr d. Al e. Fe

Chemical Bonding: Objectives:  Predict Charge and Size of Elements when become stable.  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of compounds.

Size of an Ion Size of an Ion Use the diagrams below to determine what happens to the size of a neutral atom(parent atom) when it becomes an ion.

Size of an Cation Size of an Cation Why is a cation smaller than its parent atom (neutral)? Because the cation has one less energy level.

Size of an Anion Size of an Anion Why is an anion larger than its parent atom? Because the anion has more valence electrons so the repulsion force is greater between them.

Size of Ions Size of Ions 1.Circle the atom that is larger in size. a.Ca or Ca 2+ b.S or S 2- 2.Circle the atom that is smaller in size. a. Al or Al 3+ b. N or N 3-

Explain how you know what type of bond is being illustrated below.

Ionic Bonding Ionic Bonding  Transfer of valence electrons from a metal atom to a non-metal atom.  Creates a metal ion (cation) and non-metal ion (anion) that are held together by attractive forces (chemical bond)  Chemical bonds are intramolecular forces.  Formation of Ionic Compounds

Intramolecular Forces  The ionic bond  The attractive force between the metal and non-metal ions in the compound. Na Cl - Na Cl -

Ionic Compounds   The overall charge on any ionic compound is always zero.   The ratio of metal to non-metal ions has to equal zero.

Chemical Bonding: Objectives:  Predict Charge and Size of Elements when become stable.  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of compounds.

Ionic Bonding (Lewis Dot Transfer) Ionic Bonding (Lewis Dot Transfer) Metal (Lewis Dot) Non-metal (Lewis Dot) Ionic Bonding (Lewis Dot Transfer) Chemical Formula

Chemical Bonding: Objectives:  Predict Charge and Size of Elements when become stable.  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of compounds.

Ion Quiz Ion Quiz

Naming Ionic Compounds Naming Ionic Compounds

Types of Ions Types of Ions  Monatomic Ions : 1 element makes-up 1 element makes-up an ion.  Polyatomic Ions: 2 or more elements make-up an ion.

Chemical Bonding: Objectives:  Predict Charge and Size of Elements when become stable.  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of compounds.

Naming Ions Naming Ions mono or poly ion name of ion mono or poly ion name of ion a.K 1+ b. (S0 4 ) 2- c. Cl 1- d. (NO 2 ) 1- e. Ni 3+

Ions Venn Diagram Ions Venn Diagram Monatomic Ions Polyatomic Ions Both

Ionic Compounds: Chemical Name Ionic Compounds: Chemical Name

Chemical Bonding: Infinite Campus Updated:  Ionic Bonding Lab(12pts.)-missing some  Periodic Table Exam Revision Objectives:  Predict Charge and Size of Elements when become stable.  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of compounds.

Ions Venn Diagram Ions Venn Diagram Monatomic Ions Polyatomic Ions Both

Ionic Compounds-Chemical Formula Ionic Compounds-Chemical Formula 1.MgCl 2 2. Mn 3 (PO 4 ) 2 3. CaS 4. Ca(SO 3 ) 5. Li(C 2 H 3 O 2 )

Ionic Compound: Chemical Formula  The overall charge on an ionic compound is always zero. 1. chromium(II) carbonate 2. potassium phosphite 3. iron (III) nitrite 4. ammonium chloride

Chemical Bonding: Infinite Campus Updated:  Ionic Bonding Lab(12pts.)-missing some  Periodic Table Exam Revision Objectives:  Predict Charge and Size of Elements when become stable.  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of compounds.

Ionic Compound: Nomenclature  Complete nomenclature worksheet  Quiz tomorrow.

Chemical Bonding: Due:  Ionic Compound Packet Objectives:  Predict Charge and Size of Elements when become stable.  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of compounds. Homework:  Ionic Bonding Nomenclature Quiz-Monday!

Ionic Bonding: A bond between ions.

Ionic Bonding (Lewis Dot Transfer) Ionic Bonding (Lewis Dot Transfer) Metal (Lewis Dot) Non-metal (Lewis Dot) Ionic Bonding (Lewis Dot Transfer) Chemical Formula

Covalent Bonds Covalent Bonds Prentice Hall KY Teacher Express, 2008

Chemical Bonding: Due:  Ionic Compound Packet Objectives:  Predict Charge and Size of Elements when become stable.  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of compounds. Homework:  Ionic Bonding Nomenclature Quiz-Monday!

Covalent Bonds Covalent Bonds Prentice Hall KY Teacher Express, 2008 Covalent Bonding: Bond between neutral atoms because they are sharing valence electrons.

Molecules: Lewis Dot Sharing Molecules: Lewis Dot Sharing Molecular Formula Lewis Dot SharingMolecular Structure Polar or Non-polar Bonds?

Chemical Bonding: Infinite Campus Update:  Ionic Bonding Quiz  Molecular Structures Due:  Polar Bear Comic Strip Objectives:  Predict Charge and Size of Elements when become stable.  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of compounds.

Covalent Bonds Covalent Bonds Prentice Hall KY Teacher Express, 2008 Covalent Bonding: A bond between neutral atoms because they are sharing valence electrons. Are valence electrons shared equally between atoms?

Chemical Bonding: Polarity Bell Ringer Chemical Bonding: Polarity Bell Ringer 1.What does the penguin and the polar bear represent in the comic strip? 2.What does the ice cream scoops represent in the comic strip? 3. a. What did the iceberg represent? 4.Explain using the illustrations the difference between polar and non-polar covalent bonds?

Covalent Bonds Covalent Bonds Prentice Hall KY Teacher Express, 2008 Why do atoms sometimes not share valence electrons equally?

Electronegativity Electronegativity  The degree of attraction one atom has towards another atom’s valence electron in a compound.  Electronegativity: The degree of attraction one atom has towards another atom’s valence electron in a compound. O H H

Covalent Bonds Covalent Bonds Prentice Hall KY Teacher Express, 2008 Polar Bonds: Where atoms do NOT share bonded electrons equally. Usually 2 different elements making up the bond. Ex. N----F bond Non-Polar Bonds: Where atoms share bonded electrons equally or very close to it. Usually same elements. Ex. O-----O

Covalent Bonds Covalent Bonds Prentice Hall KY Teacher Express, 2008

Electronegativity Table Electronegativity Table webassign.net What patterns/trends do you observe with the electronegativity table? The electronegativity table is helpful in predicting the type of bond formed between two atoms.

Chemical Bonding: Objectives:  Predict Charge and Size of Elements when become stable.  Illustrate chemical bonding using Lewis Dot structures.  Establish chemical formula and name of compounds. Homework: Chemical Bonding Exam-Friday

Chemical Bonding : Electronegativity Difference Chemical Bonding : Electronegativity Difference

Chemical Bonding and Electronegativity Chemical Bonding and Electronegativity Chemical FormulaClassify Compound Chemical NameBonds: Ionic, Polar, Non-polar (EN difference)

Chemical Bonding and Electronegativity Chemical Bonding and Electronegativity Chemical FormulaClassify Compound Chemical NameBonds: Ionic, Polar, Non-polar (EN difference) CO 2 C---O CI 4 C----I MgF 2 Mg---F N2N2 N----N Na 2 ONa---O

Covalent Compounds: Nomenclature Covalent Compounds: Nomenclature  Covalent compounds = molecules  When naming covalent compounds prefixes are used. Prefixes:  Mon(o)=1 atom Hexa = 6 atoms  Di= 2 atoms Hepta= 7 atoms  Tri= 3 atoms Octa= 8 atoms  Tetra= 4 atoms Nona= 9 atoms  Penta= 5 atoms Deca= 10 atoms

Covalent Compounds: Nomenclature Covalent Compounds: Nomenclature 1.Name the following molecules. a.HF b.NH 3 c.O 2 2. Determine the molecular formula of the following: a.dihydrogen monosulfide b.dinitrogen trioxide c.bromine

Diatomic Molecules Diatomic Molecules  Two atoms of the same element bonded together.  Name of the element.  Other diatomic molecules?

Chemical Bonding Chemical Bonding Ionic Bonding:  Many times between a metal and a non-metal ion.  Transfer of valence electrons.  Electronegativity difference between bonded ions is large.  Ionic Bond = Intramolecular Forces Covalent Bonding:  Between two non-metals atoms.  Share valence electron(s)  Electronegativity difference between bonded atoms is small.  Covalent Bond = Intramolecular Forces  Covalent compounds are also called molecules.

Compounds Venn Diagram Compounds Venn Diagram Ionic Compounds Covalent Compounds Both Suggest filling out to prepare for exam.