@BoltonSch Tweet 17/04/2018 01:50 PM Tweet 17/04/2018 01:50 PM Posted by Bolton School on 17 Apr 2018 Modified by Bolton School on 07 Sep 2023 @BoltonSch RT @Chem_BoltonSch: Year 7 are using their knowledge of separations learned so far to get clean salt from rock salt