I made this for students to use or refer to in stoichiometry problems. They typically find the idea of dimensional analysis confusing, but this makes their thinking more visible. It is based on ideas from Gary Abud: http://blog.abud.me/search?q=bca+method If you think it might be useful go ahead and use it. It is a screenshot from a GoogleSlides presentation for my unit: http://i-biology.net/myp/intro-chemistry/the-mole-stoichiometry/

1. BCA Method in Stoichiometry Problems: Visual Organiser
Resources: http://is.gd/stoichio Read more about this method: http://blog.abud.me/search?q=bca+method

2. BCA Method in Stoichiometry Problems: Visual Organiser
The Periodic Table of the Elements +1
Cations (positive)
+2 +3 -3
Anions (negative)
-2 -1
Always use this version of the periodic table in your work. H
+
Mg
2+
Al
3+
N
3-
O
2-
Cl
-
+ 2+ 3+ 3- 2- -
Li Ca Fe P S Br
Ions form when electrons are lost (cations – overall positive) or Na
+
Fe
2+
PO4
3-
CO3
2-
I
-
+ 2+ 2- -
when electrons are gained (anions – overall negative). K Cu SO4 NO3
+ 2+ -
NH4 Zn HCO3
2+ -
Pb OH
Source: IBDP Chemistry subject guide and exam data booklet.
Resources: http://is.gd/stoichio Read more about this method: http://blog.abud.me/search?q=bca+method