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CP06 – Formulas

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Date:

  • Thursday, September 8th

Class Business

  • review homework (table of particles)
  • questions? thoughts?

Basics

  • subscripts / coefficients
  • parentheses
  • examples (book practice below)

formula-practice

Elements

  • some elements exist naturally in pairs (or more)
  • formula looks like compound – actually natural element
  • examples (below from textbook)

diatomics

Ions and Molecules

  • when an atom (or group) has an imbalance of electron / protons
  • can be positive or negative
  • the “charged” particle is an ion
  • examples of groups (see document in Schoology)

Oxidation States

  • Defined (personality)
  • all elements have at least ONE (often more)
  • can be predicted from PT
  • examples

Homework

  • Study for Quiz
  • first part of “Oxidation Numbers” sheet
  • I provide element – you write name, symbol, number
  • you get to use periodic table
  • (will quiz on next parts in coming days)

Information

This entry was posted on September 7, 2016 by in CP1617 and tagged , , .

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