1 / 10

Living By Chemistry SECOND EDITION

Explore the HONC 1234 rule for hydrogen, oxygen, nitrogen, and carbon atoms. Learn to draw accurate structural formulas, identify isomers, and understand molecular orientation in space.

marthagibbs
Download Presentation

Living By Chemistry SECOND EDITION

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Living By ChemistrySECOND EDITION Unit 2: SMELLS Molecular Structure and Properties

  2. Lesson 30: HONC if You Like Molecules • Bonding Tendencies

  3. ChemCatalyst • Examine these molecules. What patterns do you see in the bonding of atoms of hydrogen, oxygen, carbon, and nitrogen?

  4. Key Question • What are the rules for drawing structural formulas?

  5. You will be able to: • create accurate structural formulas from molecular formulas • identify and differentiate between isomers and molecules oriented differently in space • explain and utilize the HONC 1234 rule

  6. Complete the Table: Octet = full valence shell = 8 electrons

  7. Prepare for the Activity Work in pairs.

  8. Discussion Notes • The HONC 1234 rule is a way to remember the bonding tendencies of hydrogen, oxygen, nitrogen, and carbon atoms in molecules. Hydrogen tends to form one bond, oxygen two, nitrogen three and carbon four. • When trying to decide whether two structures represent the same molecule, you must check how the atoms are connected.

  9. Wrap Up • What are the rules for drawing structural formulas? • The HONC 1234 rule indicates how many times hydrogen, oxygen, nitrogen, and carbon atoms tend to bond. • When a molecule is oriented differently in space, it is still the same molecule.

  10. Check-In • Will any of the molecules shown on the following slide have similar smells? Explain your thinking.

More Related