What Makes Water Hard? AP Lab #3 Chemicals_EZ-Prep ambulacral grooves

ambulacral grooves

Single D-cell holder mounted on a base with 4mm sockets

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

Paired with simulated antigen-antibody reagents for safe classroom use

U-form absorption tube constructed from borosilicate glass features stoppered ends for calcium chloride desiccation and gas drying applications

What Makes Water Hard? AP Lab #3 Chemicals_EZ-Prep ambulacral groovesStudents 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.