You Will Need:  1. Pencil, Text Book- Periodic Table,     Colored Pencils  2. Ionic & Covalent Bonding 1 pages-2     sides...
Question #18 & 24 1. Disregard- corrected    incorrectly   • Added 4 points to total     score 2. Answer Key was from a di...
Please SCHEDULE: 1. To take Retake Test #2   • 129/185 or lower 2. Starts Thursday of this week 3. Parent Signature and   ...
You will need 100 3 x 5 cards   1. Print out Questions & Answers hyperlinked      on Learning Point      •   Glue, Staple ...
1. The class of elements found along the   zig-sag line….2. The charge of the nucleus of any   atom….Why?3. The scientist ...
6. When two charged atoms bond they   form this type of bond.7. What does “COVALENT” mean?8. Which class of elements tend ...
Timer Designers: In charge of today’s lesson  on the computer (R & R Required)Everything on this planet is made of atoms f...
Everything on this planet is made of atoms from elements. Even though   the number of elements on the Periodic Table is li...
Not all the electrons in an atom are used to make   chemical bonds. It is the electrons on Outer-Most   Level or VALENCE e...
Element                        Bohr Model                Lewis Dot                                                        ...
Element     Group       Valence   Bond or Not BondHydrogen            1        1              BondMagnesiumOxygenSulfurKry...
Watch the video clip on Covalent & Ionic Bonding  (hyperlinked on Learning Point)Compound             Lewis Dot Bonding Co...
Question                          AnswerIon                               • Charged atom                                  ...
Crystal Lattice      uthBi s m
Question                              AnswerWhat are the characteristics of       •   Usually between Metals and Nonmetals...
Question                              AnswerWhat are the characteristics of       •   Usually between Metals and Nonmetals...
Question                               AnswerIllustrate a positively charged Bohr   Before you move onto the next slide….t...
Question                               AnswerIllustrate a positively charged BohrModel of an aluminum atom. (3+)          ...
Forming Sodium Chloride                   http://www.youtube.com/watch?v=2mzDwgyk6QMBefore (pg. 233)                      ...
Question                                     AnswerCharacteristics of Covalent bonds            •   Valance electrons are ...
C 12 H 22 O 11C 6 H 10 O 5
http://www.youtube.com/watch?v=ulyopnxjAZ8&feature=relmfuDrawing Lewis Dot Diagram BondsMolecule Illustration   Explanatio...
Element                        Bohr Model            Lewis Dot                                                     (Symbol...
http://www.youtube.com/watch?v=7DjsD7Hcd9UHow do we determine the type of       • Identify class of elementsbond in a comp...
ELECTRONEGATIVITY                   VALUES                        0-0.4 = Non-polar covalent                        .41-2....
Let’s try a couple:H2O                   Calculate the electronegativity factor                      H = 2.2              ...
Homework:1) Building Blocks of Matter –   Counting Atoms – Due Tomorrow2) Test #2 Corrections and Signature   – Due Wednes...
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Electrons and Chemical Bonding Spring 2013 Day 2

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Electrons and Chemical Bonding Spring 2013 Day 2

  1. 1. You Will Need: 1. Pencil, Text Book- Periodic Table, Colored Pencils 2. Ionic & Covalent Bonding 1 pages-2 sides (pgs 5 & 6 of packet) 4. Log #3 Update 5. Building Blocks of Matter – Counting Atoms– Due NOW
  2. 2. Question #18 & 24 1. Disregard- corrected incorrectly • Added 4 points to total score 2. Answer Key was from a different version of the test.
  3. 3. Please SCHEDULE: 1. To take Retake Test #2 • 129/185 or lower 2. Starts Thursday of this week 3. Parent Signature and Corrections – due Wed.
  4. 4. You will need 100 3 x 5 cards 1. Print out Questions & Answers hyperlinked on Learning Point • Glue, Staple or Tape Questions on the Front and Answers on the back OR • You can write out the questions & answers 2. Due at the beginning of class on Friday 3. Quiz on Friday
  5. 5. 1. The class of elements found along the zig-sag line….2. The charge of the nucleus of any atom….Why?3. The scientist who developed the First Atomic Theory?4. The MOST reactive NONMETALS on the Periodic Table are the ______________.5. Is Aluminum more likely to give or take electrons? Why?
  6. 6. 6. When two charged atoms bond they form this type of bond.7. What does “COVALENT” mean?8. Which class of elements tend to GAIN electrons?9. What is the valence of Sulfur? How do you know?10. How many more electron bonds would Sulfur need to have a full outer shell?
  7. 7. Timer Designers: In charge of today’s lesson on the computer (R & R Required)Everything on this planet is made of atoms from elements. Even though the number of elements on the Periodic Table is limited, joining the elements in different ways allows you to make a huge number of combinations. Chemical Bonding is the joining of atoms to form new substances. The properties of these new substances are different from the properties of the original elements. When chemical bonds form, electrons are shared, gained or lost.   
  8. 8. Everything on this planet is made of atoms from elements. Even though the number of elements on the Periodic Table is limited, joining the elements in different ways allows you to make a huge number of combinations.  Need to Know!Chemical Bonding is the joining of atoms to form new substances. The properties of these new substances are different from the properties of the original elements. When chemical bonds form, electrons are shared, gained or lost. Understanding the electron configuration, (Electron Dot,) for each atom will help you understand how different elements will bond or not bond with other elements.  
  9. 9. Not all the electrons in an atom are used to make chemical bonds. It is the electrons on Outer-Most Level or VALENCE electrons, (Electron-Dot) that determine how an atom will react (bond). REMEMBER: You can use your periodic table to determine valence values for most elements. Atoms want to be “happy” or stable….if they have a full outer shell. Atoms that have fewer than eight valence electrons usually form bonds. The only time a full shell is equal to 2 if for the element Helium. 
  10. 10. Element Bohr Model Lewis Dot (Symbol + Valence)Lithium Row = 2 valence 1 Electrons= 3-Atomic # 2 Protons = 3+ P=3 N=4 LiAtomic Mass– Atomic # Neutrons = 4 7-3=Neon valence Row = 2 8Atomic # 2 Electrons= 10- Ne P =10 Protons = 10+ N =10Atomic Mass– Atomic # Neutrons = 10 20-10
  11. 11. Element Group Valence Bond or Not BondHydrogen 1 1 BondMagnesiumOxygenSulfurKryptonLithiumCarbon
  12. 12. Watch the video clip on Covalent & Ionic Bonding (hyperlinked on Learning Point)Compound Lewis Dot Bonding Config. Type of Bond and Why?Sodium Fluoride(NaF)Diatomic Fluoride(F2)Hydrogen Fluoride(HF)
  13. 13. Question AnswerIon • Charged atom • Caused by a transfer (lose or gain) or shared electronWhat are the characteristics of • Usually between Metals and NonmetalsIonic Bonds? • Transfer of electrons – atoms become IONS • Form Crystal Lattices • Brittle • High melting and boiling points • Dissolve easily in water • Form compounds • Specific shape
  14. 14. Crystal Lattice uthBi s m
  15. 15. Question AnswerWhat are the characteristics of • Usually between Metals and NonmetalsIonic Bonds? • Transfer of electrons – atoms become IONS • Form Crystal Lattices • Brittle • High melting and boiling points • Dissolve easily in water • Form compounds • Specific shapeIllustrate a neutrally charged Bohr Before you move to the next slide….try to drawModel of an aluminum atom. this on your own and then check to see how you did. If you made a mistake….figure out what you did incorrectly.
  16. 16. Question AnswerWhat are the characteristics of • Usually between Metals and NonmetalsIonic Bonds? • Transfer of electrons – atoms become IONS • Form Crystal Lattices • Brittle • High melting and boiling points • Dissolve easily in water • Form compounds • Specific shapeIllustrate a neutrally charged BohrModel of an aluminum atom. 3 2 8 P=13 N=14
  17. 17. Question AnswerIllustrate a positively charged Bohr Before you move onto the next slide….try toModel of an aluminum atom. (3+) draw this on your own.
  18. 18. Question AnswerIllustrate a positively charged BohrModel of an aluminum atom. (3+) 8 2 P=13 N=14Why is Al3+ considered an (Look at all the subatomic particles before youion? answer this question.)
  19. 19. Forming Sodium Chloride http://www.youtube.com/watch?v=2mzDwgyk6QMBefore (pg. 233) AfterQuestions: Questions:1)Why does Sodium become an Ion? 1)Why do Sodium and Chlorine bond?2)Is it Positive or Negative? Why? 2)What is the overall charge of the3)Why does Chlorine become an Ion? compound?4)Is it Positive or Negative? Why? 3)Does NaCl have the same characteristics as Na and Cl? 4)What are some unique characteristics of NaCl?
  20. 20. Question AnswerCharacteristics of Covalent bonds • Valance electrons are shared • More often between nonmetal • Low melting and boiling point • Free flowing but can be brittle • Form molecules • Do not have a specific shape - flexibleView Video – Covalent Bonding –hyperlinked on Learning Point. How many types of covalent bonds are shown in thehttp://www.youtube.com/watch?v=1wpDicW_MQQ video clip? ______
  21. 21. C 12 H 22 O 11C 6 H 10 O 5
  22. 22. http://www.youtube.com/watch?v=ulyopnxjAZ8&feature=relmfuDrawing Lewis Dot Diagram BondsMolecule Illustration Explanation Electron Dot (Color Code each element) 1. What kind of bond does Hydrogen & Oxygen make? 2. How do you know? P=8 N=8 3. Why does one Oxygen bond with two Hydrogen P=1 P=1 atoms? N=0 N=0
  23. 23. Element Bohr Model Lewis Dot (Symbol + Valence)Lithium Row = 2 1 Electrons= 3-Atomic # 2 Protons = 3+ P=3 N=4 LiAtomic Mass– Atomic # Neutrons = 4 7-3=Neon Row = 10 8Atomic # 2 Electrons= 10- Ne P =10 Protons = 10+ N =10Atomic Mass– Atomic # Neutrons = 10 20-10
  24. 24. http://www.youtube.com/watch?v=7DjsD7Hcd9UHow do we determine the type of • Identify class of elementsbond in a compound? • Same class usually covalent • Opposite class usually ionic • Calculate the electronegativity factorWhat is ELECTRONEGATIVITY? A measure of how much an element wants an electron P=8How do you know the N=8 Look it up (see next slide)electronegativity factor of anelement? P=1 P=1 N=0 N=0What are the determining values for 0-0.4 = Non-polar covalenteach type of bond? .41-2.0 = Polar covalent >2.0 = Ionic
  25. 25. ELECTRONEGATIVITY VALUES 0-0.4 = Non-polar covalent .41-2.0 = Polar covalent >2.0 = Ionichttp://www.tutor-homework.com/Chemistry_Help/electronegativity_table/electronegativity.html
  26. 26. Let’s try a couple:H2O Calculate the electronegativity factor H = 2.2 O = 3.44 3.44 – 2.2 = 1.24 PolarNaCl P=8 Na = .93 Covalent N=8 Cl = 3.16 P=1 P=1 3.16 - .93 = 2.23 Ionic N=0 N=0 0-0.4 = Non-polar covalent .41-2.0 = Polar covalent >2.0 = Ionic
  27. 27. Homework:1) Building Blocks of Matter – Counting Atoms – Due Tomorrow2) Test #2 Corrections and Signature – Due Wednesday3) Ionic and Covalent Bonding – Due Thursday4) STAR Cards #1-30 – on 3x5 cards – Due Friday at the beginning of class

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