With the Build Your Own Hydrometer Chemistry Laboratory Kit, students construct a hydrometer and calibrate it using liquids with known densities. Once calibrated, students determine the densities of unknown liquid samples.
Just how thick is molasses? Density and specific gravity of liquids are determined with an instrument called a hydrometer. In this experiment, students construct a hydrometer and calibrate it using liquids with known density or specific gravity values. Once calibrated, students use the hydrometers to determine the densities of several unknown liquid samples. Teacher Notes, extensive background material, and reproducible student handouts are included, along with all chemicals and supplies needed to perform the lab.
Complete for 30 students working in pairs.
Correlation to Next Generation Science Standards (NGSS)
Science & Engineering Practices
Developing and using models
Disciplinary Core Ideas
MS-PS1.A: Structure and Properties of Matter HS-PS1.A: Structure and Properties of Matter