What Makes Water Hard? AP Lab #3 Chemicals_EZ-Prep this 500g bottle of laboratory-grade

this 500g bottle of laboratory-grade sodium polyacrylate powers diaper-chemistry demos

the high-dispersion flint material producing exaggerated spectral separation for vivid rainbow demos

ambulacral grooves

5-inch scoop

this wide-mouth LDPE wash bottle delivers controlled flow through a self-venting leak-proof nozzle

What Makes Water Hard? AP Lab #3 Chemicals_EZ-Prep this 500g bottle of laboratory-gradeStudents will investigate the suitability of gravimetric analysis for determining the amount of water hardness in the form of calcium carbonate found in various water samples. The activity contains enough materials for 15 groups of students as well as a Teacher?s Guide and Student Study Guide Copymasters. Meets Big Idea 1, Investigation 3, Primary Learning Objective 1. 19.