Science Infoblog

26 03 2009

NCEA Level 1 Chemistry: writing chemical formulae:

Posted by: john west in NCEA Level 1 Chemistry, Year 11 Science Posts

In ionic compounds the total charge of the positive ions is balanced by the total charge of the negative ions.

1. write down the formula of the metal ion
2. write down the formula of the negative ion
3. if the charge is unbalanced add another ion of the opposite charge.
4. repeat until charges balance

Watch the video to see how this works.

When you master this skill you are well on your way to becoming a chemistry geek!. Good luck

……………. and final finally……… a mars bar to the first person who can identify the video music.

Tags: chemistry, metals

This entry was posted on Thursday, March 26th, 2009 at 7:04 am and is filed under NCEA Level 1 Chemistry, Year 11 Science Posts. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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