What Makes Water Hard? AP Lab #3 Chemicals_EZ-Prep the high-dispersion flint material producing

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

Paired with simulated antigen-antibody reagents for safe classroom use

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

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

sized to fit the PH0380A bar-breaking apparatus for repeated thermal-contraction fracture demonstrations

What Makes Water Hard? AP Lab #3 Chemicals_EZ-Prep the high-dispersion flint material producingStudents 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.