Ions

Today in D Liebs' class we learned all about the wonderful world of ions. We started off class watching a video on what happens when you mix sodium and chlorine to make table salt.
Next we started looking at the notes on ions. Most of this is covered in the ChemThink that is due Monday. Since the notes were not online yet, I will just have to inform you myself.
Ions

• When atoms or molecules gain or lose electrons, they become charged particles called ions
• Positive Ions = cations
• Negative ions = anions
• There is never a change in the number of protons

Noble Gas Connections

• Atoms that are close to a noble gas form ions that contain the same number of electrons as the neighboring noble gas atom

Names of Compounds-Cations

• Monatomic cations take the name from the metal from which they form
• If more than one charge is possible, a Roman numeral is used to denote the charge

Names of Compounds-Anions

• Monatomic anions are named by adding -ide to the stem of the name of the element from which they form

Oxoanions

• When a nonmetal forms two oxoanions, -ate is used for the one with the larger number of oxygens, -ite is used for the one with the smaller number of oxygens
• When a nonmetal forms more than two oxoanions, prefixes are used. -per (largest # of oxygens) -hypo (smallest # of oxygens)

Ionic Compounds

• Combine the name of the cation with the name of the anion

That raps up the notes covered today. Along with the homework assigned earlier of the WebAssign( due tomorrow), The ChemThink (due Monday), the book problems given at the beginning of every chapter, and the extra problems 17-24 (both due on the day of the test), we got two new worksheets today. If you are still confused about Ions, you can read section 3.1 in the textbook.
The next scribe will be Paige H.