The worksheets will help with empirical formulae calculations (there is a help sheet if needed for weaker students) however there is also a stretch and challenge task on Ions for higher ability students to complete to differentiate. (tes.com)
Just as the word I is elusive, even when used by myself, and seemingly transcends the experience that others have of me, so also «God» is a word that eludes any set empirical formulas. (religion-online.org)
The practical activity helps bring together empirical formula and water of crystallisation but also helps prepare students for PAG 1.3 prior to them completing their first PAG. (tes.com)