Chemical Bonding: 1.5.16 Due: Classroom Rules Contract Review Objectives: I can distinguish between ionic and covalent compounds. Read and complete Venn Diagram Work on Periodic Table Review Packet

Chemical Compounds Venn Diagram Ionic Compounds Covalent Compounds Similarities

Chemical Bonding: 1.7.16 Due: Chemical Activity of Elements Worksheet Objectives: I can identify which elements are most active and predict how they will become stable. I can distinguish between the types of chemical bonds. I can illustrate chemical bonding between elements using the Lewis Dot structures.

Chemical Activity Occurs when an element is not stable. How can an element become stable? Octet Rule: Elements will gain, lose, or share valence electrons to reach stability. Creates chemical bonds between atoms. This is why there is more compounds in nature than elements.

Chemical Activity Worksheet Assessed homework with key and addressed questions.

Chemical Activity and Size of Atom The most active metals lose valence electrons the easiest- largest in size. The most active non-metals gain valence electrons the easiest-smallest in size.

Chemical Bonding Most Common Types of Bonding: 1. 2.

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 also called intramolecular forces. Formation of Ionic Compounds Ionic Bonding

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

Chemical Bonding: Bell Ringer-Key Classify as ionic or covalent. CH4 b. CuO c. PBr3 d. K3N e. O2 (covalent) (ionic) (covalent) (ionic) (covalent) Explain if CaCl2 (ionic) or C6H12O6 (covalent) would have the following physical properties: conduct electricity? ionic-CaCl2 have a lower melting point? covalent- C6H12O6 crystallize faster out of solution? ionic- CaCl2 d. considered brittle ionic- CaCl2

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

Lewis Dot Structures http://www.roymech.co.uk/Related/Chemistry/Lewis_dot_structure.html

Homework: Chemistry I Complete Ionic Bonding Packet Review Polyatomic Ions-quiz later next week.

Chemical Bonding: 1.11.16 Due: Ionic Bonding Worksheet Objectives: I can distinguish between the types of chemical bonds. I can illustrate chemical bonding between elements using the Lewis Dot structures. Review Polyatomic ions-quiz on Thursday

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

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

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 Most Common Types of Bonding: 1. 2.

Covalent Bonding : Lewis Dot Sharing A covalent compound is also called a molecule. Molecular Formula Lewis Dot Sharing Molecular Structure

Chemical Bonding: 1.13.16 Due: Covalent Bonding Worksheet Ionic vs. Covalent Properties Lab-read procedures Objectives: I can illustrate chemical bonding between elements using the Lewis Dot structures. I can classify compounds based on their physical properties. Quiz on Friday: Polyatomic Ions/Cmpds.

Covalent Bonding : Lewis Dot Sharing A covalent compound is also called a molecule. Molecular Formula Lewis Dot Sharing Molecular Structure

Covalent Bonding : Lewis Dot Sharing A covalent compound is also called a molecule. Molecular Formula Lewis Dot Sharing Molecular Structure

Primary Phase Changes

Covalent Bonding : Lewis Dot Sharing Molecular Formula Lewis Dot Sharing Molecular Structure

Chemical Bonding: Explain what kind of bonding is being illustrated in each molecule below. Example A : Example B:

Chemical Bonding: Explain what kind of bonding is being illustrated in each molecule below. Example A : Example B:

Ionic vs. Covalent Properties Lab Purpose: * To classify compounds based on their unique physical properties.

Chemical Bonding: 1.14.16 Infinite Campus: Ionic Bonding Packet (12pts.) Due: Covalent Bonding Worksheet Objectives: I can illustrate chemical bonding between elements using the Lewis Dot structures. I can classify compounds based on their physical properties. Quiz on Friday: Polyatomic Ions/Cmpds.

Chemical Bonding Quiz (multiple choice format) *Polyatomic Ions *Classifying Ionic and Covalent Compounds AND their properties (Venn Diagram). *Illustrating Ionic Bonding and Covalent Bonding

Covalent Bonding : Lewis Dot Sharing Molecular Formula Lewis Dot Sharing Molecular Structure

Covalent Bonding : Lewis Dot Sharing Molecular Formula Lewis Dot Sharing Molecular Structure

Chemical Bonding: Homework Complete Covalent Bonding Worksheet Review Chemical Bonding Notes Review Polyatomic Ions

Chemical Bonding: 1.27.16 Infinite Campus: Chemical Bonding Quiz (15pts.) Objectives: I can illustrate chemical bonding between elements using the Lewis Dot structures. I can classify compounds based on their physical properties. I can use electronegativity values to predict what type of bond is formed between atoms in a compound.

Chemical Bonding Quiz Question Missed Why did I miss it? Do you understand it?

Chemical Bonding: 1.29.16 Due: Electronegativity Questions Objectives: Review Chemical Bonding Quiz I can classify compounds based on their unique physical properties.

Ionic vs. Covalent Cmpds. Properties 2nd Properties Grp 1 Grp 2 Grp 3 Grp 4 Grp 5 Grp 6 Grp 7 Solubility Which are Soluble? Crystal Growth Fastest: Slowest: Electrical Conduction Which conducted electricity? Melting point time Fastest :

Chemical Bonding/Properties Lab Unknown Sample Ionic or Covalent? Sample’s Identity Sample’s Chemical Formula

Chemical Bonding Quiz

Chemical Bonding/Properties Lab Unknown Sample Ionic or Covalent? Sample’s Identity Sample’s Chemical Formula

Ionic vs. Covalent Cmpds. Properties 2nd Properties Grp 1 Grp 2 Grp 3 Grp 4 Grp 5 Grp 6 Grp 7 Solubility Which are Soluble? Crystal Growth Fastest: Slowest: Electrical Conduction Which conducted electricity? Melting point time Fastest :

Ionic vs. Covalent Cmpds. Properties 3rd Properties Grp 1 Grp 2 Grp 3 Grp 4 Grp 5 Grp 6 Grp 7 Solubility Which are Soluble? Crystal Growth Fastest: Slowest: Electrical Conduction Which conducted electricity? Melting point time Fastest :

Ionic vs. Covalent Cmpds. Properties 6th Properties Grp 1 Grp 2 Grp 3 Grp 4 Grp 5 Grp 6 Grp 7 Solubility Which are Soluble? Crystal Growth Fastest: Slowest: Electrical Conduction Which conducted electricity? Melting point time Fastest :

Chemical Bonding: 2.01.16 Infinite Campus: Objectives: Ionic vs. Covalent Compounds Properties Lab Chemical Bonding Quiz II Objectives: I can classify compounds based on their unique physical properties. I can classify compounds based on their electronegativity differences.

Chemical Bonding: 2.01.16-6th Infinite Campus: Objectives: Ionic vs. Covalent Compounds Properties Lab Objectives: I can classify compounds based on their unique physical properties. Chemical Bonding Quiz II I can classify compounds based on their electronegativity differences.

Properties of Chemical Compounds Does Covalent or Ionic Conduct Electricity when dissolved in water?

Properties of Ionic Compounds 7.2 Properties of Ionic Compounds Ionic compounds can conduct an electric current when melted or dissolved in water. When sodium chloride melts, the sodium and chloride ions are free to move throughout the molten salt. If a voltage is applied, positive sodium ions move to the negative electrode (the cathode), and negative chloride ions move to the positive electrode (the anode). Predicting What would happen if the voltage was applied across a solution of NaCl dissolved in water?

Properties of Chemical Compounds Do Ionic or Covalent Compounds create crystals faster? Collection of Ionic Compounds Collection of Covalent Compounds

Properties of Chemical Compounds 7.2 Properties of Chemical Compounds The orderly arrangement of atoms/ions produces beautiful crystalline structure. Which compound from the lab produced crystals faster/slower? The beauty of crystalline solids, such as these, comes from the orderly arrangement of their component ions.

Ionic Compounds: Crystal Lattice Stronger attractive force between ions Faster crystal growth. Sodium cations and chloride anions form a repeating three-dimensional array in sodium chloride (NaCl). Inferring How does the arrangement of ions in a sodium chloride crystal help explain why the compound is so stable?

Covalent Compounds: Crystal Lattice Weaker attractive forces between covalent compounds (molecules). Slower crystal growth. o o o o C C C C http://iscience.ru/wp-content/uploads/2008/12/sugar-molecule-02.jpg http://www.michigansugar.com/images/ag/production/th_med_crystals.jpg

Melting Points of Compounds Which has a higher melting point? Does the table below prove or disprove your conclusion from the lab? Explain your answer. Chemical Compounds Melting Point (oC) Boiling Point (oC) Cr2O3 2,266 4,000 SrF2 1,470 2,489 CCl4 -22.9 76.6 CH4O -97.8 64.7 Chemical Compounds Article

Properties of Chemical Compounds Why do ionic compounds in general have higher melting and boiling points? Collection of Ionic Compounds Collection of Covalent Compounds

Properties of Chemical Compounds Why do ionic compounds in general have higher melting and boiling points? stronger attractive forces between ions Collection of Ionic Compounds Collection of Covalent Compounds

Properties of Chemical Compounds Ionic Compounds are primarily solids at room temperature. Molecules can be a solid, liquid, or gas at room temp. Examples: . O2 and CH4 (C8H18) (C8H8)

Properties of Chemical Compounds Which type of compound is more brittle when stress is applied to it? Collection of Ionic Compounds Collection of Covalent Compounds

Properties of Ionic Compounds Ionic crystals are brittle when stress is applied. Repulsion increases when similar ions are force together. + - - - - + + + + + - - - - + + + + http://www.chemguide.co.uk/atoms/structures/ionicstruct.html

Properties of Molecules Molecules are more resilient (durable) than ionic compounds. Why? http://www.chemguide.co.uk/atoms/structures/ionicstruct.html

Chemical Bonding: 2.02.16 Objectives: Due: Chemical Bonding Review Objectives: I can classify compounds based on their electronegativity differences.

Chemical Compounds Venn Diagram-2nd Ionic Compounds Covalent Compounds Similarities

Chemical Compounds Venn Diagram-3rd Ionic Compounds Covalent Compounds Similarities

Chemical Compounds Venn Diagram-6th Ionic Compounds Covalent Compounds Similarities

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

Covalent Bonding : Lewis Dot Sharing Molecular Formula Lewis Dot Sharing Molecular Structure

Electronegativity The degree of attraction one atom’s protons has toward another atom’s valence electrons during bonding. It can predict the type of bond formed between two atoms.

Electronegativity Values webassign.net

Chemical Bonding : Electronegativity Difference

Covalent Bonds 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 Prentice Hall KY Teacher Express, 2008 70

Chemical Bonding and Electronegativity Chemical Formula Classify Compound: Ionic or Covalent Bonds: Ionic, Polar, Non-polar (EN difference) CO2 C---O CI4 (carbon and iodine) C----I MgF2 Mg---F N2 N----N Na2O Na---O

Chemical Bonding: 2.03.16 Chemical Bonding and Electronegativity Due: Chemical Bonding and Electronegativity Objectives: I can classify compounds based on their electronegativity differences. I can distinguish between types of chemical bonding.

Chemical Bonding and Electronegativity Chemical Formula Classify Compound: Ionic or Covalent Bonds: Ionic, Polar, Non-polar (EN difference) CO2 C---O CI4 (chlorine and iodine) C----I MgF2 Mg---F N2 N----N Na2O Na---O

Water is a universal solvent en.wikipedia.org

Polar Covalent Bonds: Partial Charges Weaker attractive forces between covalent compounds (molecules) Slower crystal growth. o o o o C C C C http://iscience.ru/wp-content/uploads/2008/12/sugar-molecule-02.jpg http://www.michigansugar.com/images/ag/production/th_med_crystals.jpg

Metallic Bonding Metallic Bonding: Metal cations are attracted to sea of valence electrons. How does this happen? The metal atoms will lose their valence electrons and become cations. The free valence electrons are extremely mobile, constantly moving between the metal cations. The metal cations are attracted to the free and mobile valence electrons.

Covalent Bonding

Ionic Bonding