Chapter 19.1 Molecules and compounds by img20336


									Chapter 19.1 Molecules and compounds

Teacher: Kenneth O’Rourke                                 Subject: Physical Science
Dates: 10-25-03 to 10-29-03                                 Time:          Approx one week
Topic: Chemical bonding
Grade: 9 inclusion classroom
Note: Intelligences- Linguistic, logical math, spatial, kinesthetic, musical, interpersonal,
intrapersonal, naturalist.
Per. Standards- active learning, coherence, critical/creative thinking, real world
connections, reflection, fosters understanding of content

Objectives: Students will be able to:
  • Relate chemical bonding to its placement on the periodic table
  • Identify how chemical bonds form
  • Explain the role of valence electrons in the bonding process
  • Identify and diagram ionic and covalent bonds
  • To relate and identify the types of bonds used in biological processes
  • Discuss the importance of how each bond functions in biological processes

Materials: Notebook, Textbook p.325 – 350, blackboard, computer, PowerPoint,
overhead, TV, Internet, lab equipment, & calculator

Vocabulary: Avogadro number, chemical bond, chemical formula, covalent bond, ionic
bond, formula mass, octet rule, monatomic ion, polyatomic ion

Organizational Structure: Traditional classroom setting, lab, group work

Learning topic 1: Octet Rule
   1) Review of valence electrons
   2) Students calculate electron configuration
   3) Atoms are in their most stable state when they have 8 electrons in their outermost
      energy level- Students will be able to explain the connection between the noble
      gasses and the octet rule

Learning Topic 2: Periodic table and the octet rule
   1) Valence electrons, orbitals, and periodic table worksheet
   2) Periodic table & valence electron relative game
      1) Students group elements according to valence electrons
      2) Students investigate similarities and differences within the groups

Learning topic3: Types of bonds
   1) Bonding and molecule lab (atom building set useful for all activities) Atom
      building set is a model of an atom where protons, neutrons and electrons are
      placed in their proper places. Students can then use them to model the different
      kinds of chemical bonds.
   2) Lewis dot diagrams
      a) PowerPoint
      b) Demonstration
      c) Student examples done on overhead
   3) Ionic bonds
      a) Ionic bond PowerPoint
      b) Special properties of ionic bonds
      c) Ionic bond worksheet
      d) Ionic bond/Lewis diagram worksheet
   4) Covalent bonds
      a) Covalent bond PowerPoint
      b) Special properties of covalent bonds
      c) Covalent bond worksheet
      d) Covalent bond/Lewis diagram worksheet

Learning topic five: Chemical bonding in biological processes
   1) Introduction to sugars- (Excerpts from a pdf document found at: )
       Student handout (attached) In the first part of the lesson is to have an interactive
       lecture (in a POGIL style) by reading the document with the students, questioning
       them, and answering their questions. Have the students answer the first question,
       go over the correct answer identifying the different bonds in the molecule. Have
       students answer the second question, then get a good sample of answers from the
       class and come up with the best working answer for the question and allow
       students time to amend their answer. The final question students should answer
       on their own and hand in for you to grade. The questions are designed to see how
       well the students understand the concept of chemical bonding, and to see how
       well they can apply knowledge in a logical way to answer a question. Hints or
       cues may be needed to stimulate their thought process.
   2) Identifying the chemical bonds in a monosaccharide and polysaccharides (covered
       in question one of the handout)
   3) Benefits of the types of bonds and impact on cell function (covered in question 6
       & 7 in the handout)
   4) Students explain why covalent bonds are used in sugar formation, and why ionic
       bonds are not. (covered in question 6 & 7 in the handout)
   5) Students build a long polysaccharide from atom building sets The atom building
       sets are given to each lab group to build a glucose molecule. The groups then link
       them into a polysaccharide chain. Each lab group needs to be supervised to insure
       they are making the right molecule. When the sugars are linked, make sure the
       water molecules are also formed. Point out to the students that the nature of
       covalent bonds makes it possible for living things to string large molecules
       together from smaller base units like bricks in a building. The size of the huge
       complex molecule model in your classroom should bring home the fact that very
       complex things are made up of simpler units, and can be understood when you see
       the pattern.

Home Learning: Vocabulary, worksheets, lab reports, reading
   1) Question and answer sessions asking students to cite examples
   2) Atom building models
   3) Worksheets
   4) Biological process handout
   5) Quizzes
   6) MOLP extra help session (one on one evaluation)
   7) One thing learned and one thing you don’t get. Write it down & hand in. This is
      helpful for the students that will not raise their hand to ask questions. You can get
      a good feeling as to what they understand and what confuses them about the


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