ESSENTIAL QUESTION: How do molecules interact to form covalent bonds?
NGSSS: SC.912.P.8.6; SC.912.P.8.7
BENCHMARK(S):
-Distinguish between bonding forces holding compounds together and other attractive forces, including hydrogen bonding and van der Waals forces.
-Interpret formula representations of molecules and compounds in terms of composition and structure.
LEARNING OBJECTIVES: Students will be able to:
-distinguish between bonding forces holding compounds together and other attractive forces, including hydrogen bonding and an der Waals forces.
BELL RINGER: Write the name of each of the first 4 compounds. We will complete the page after the videos.
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| For the bell ringer: Look at the formula and use the conventions you've been taught to name the compound. Remember, mono=one; di=two; tri=three; tetra=four; penta=five; hexa=six. Also remember that the first element in a compound never has mono added to it, but will have di, trip, etc. as necessary. Any of the elements in groups 5a, 6a, and 7a have their names changed once they acquire another electron, with the ending -ide being added to the element's name. |
VOCABULARY: valence electron electron dot structure, octet rule, halide ion, ionic bond, ionic compound, chemical formula, formula unit, coordination number, metallic bond, alloy
HOME LEARNING: study for the mid-year exam.
INFORMATION PRESENTED IN CLASS:
Students completed the remainder of the handout, listing ratio of metal to non-metal elements, the type of bond (single, double, triple), and pasting the compound in the space provided.
Students then made four new compounds and completed the worksheet. Find the worksheets for this section below.
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| Now make up four compounds from the remainder of the cations/anions. Be sure to record the formula, ration of metal to non-metal, the name of compound and type of bond. Paste the cutouts in the appropriate place. |
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| These are the cutouts. I suggest coloring all the cations one color and the anions another color. Don't color so darkly that you can't read what's on the slip. |
