1. Some strategies for memorization:
QUESTION:
Which of the following polyatomic ions is not paired with its correct formula? A. nitrate, NO33-, B. borate, BO33- C. carbonate, CO32-, D. chlorate, ClO3-
Borate is BO33-
Names and formulas of polyatomic ions are trivial information --- just memorize.
Some strategies for memorization:
Read the names formulas aloud several times.
Make up memory aids; find patterns.
Work on drills (reading/writing formulas of compounds). Use it or lose it!
SCRIPT:
Which of the following polyatomic ions is not paired with its correct formula? Nitrate,… borate… carbonate… or chlorate
PAUSE CLICK Names and formulas of polyatomic ions are trivial information. In other words, you just need to memorize them as part of the basic vocabulary of Chemistry. Whether or not your teacher requires you to memorize them, it’s a good idea to just memorize them.
CLICK
Here are some strategies that you can use for memorization.
CLICK Refer to a list of names and formulas.
Read the names formulas aloud several times. Hearing and seeing should help you remember better than just seeing.
Make up memory aids. Try to find patterns in the names and formulas.
Work on drills, such as reading or writing of formulas of compounds, that require you to remember these information.
Remember that if you don’t use this information, you’re likely to forget it.
CONTINUED ON NEXT SLIDE

2. Memory aid: Oxoanions with 3 oxygen atoms, “ate”
BO33-: borate
CO32-: carbonate
SiO32-: silicate
NO3-: nitrate
ClO3-: chlorate
BrO3-: bromate
IO3-: iodate
Here’s an example of a memory aid to remember oxoanions that have 3 oxygen atoms, with names ending in “ate”
The most common ones you’ll encounter are
CLICK Borate, which has a charge of -3
CLICK CLICK
Carbonate and silicate, which both a charge of –2
And
CLICK CLICK CLICK CLICK
Nitrate, chlorate, bromate, and iodate
Let’s try to locate the elements boron, carbon, silicon, nitrogen, chlorine, bromine and iodine in the periodic table to see
if we can find a pattern that might be easy to remember.
CLICK
Here’s boron…
CLICK borate has a charge of –3
Here’s carbon
And silicon
CLICK … carbonate and silicate both have a charge of –2
Here’s nitrogen
CLICK chlorine
CLICK bromine
And Iodine
…. Nitrate, chlorate, bromate, and iodate all have a –1 charge.
CLICK PAUSE
END RECORDING

3. Video ID: © 2008, Project VALUE (Video Assessment Library for Undergraduate Education), Department of Physical Sciences Nicholls State University Author: Glenn V. Lo Narrator: Funded by Louisiana Board of Regents Contract No. LA-DL-SELECT-13-07/08