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Product 12760

By: The Flinn Staff

The Percent Water in a Hydrate Chemistry Laboratory Kit is a great introduction to gravimetric analysis! Students determine the percent water value of a hydrate and identify that hydrate from a list of possible unknowns.

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Can a dry powder actually contain water molecules? The answer is yes-when the powder in question is a hydrate! Hydrates are pure substances that contain water molecules embedded in their crystal structure. In this experiment, students heat a solid hydrate to remove the water and then calculate the percent water by measuring the mass of the solid before and after heating. From this percent water value, students identify the hydrate from a list of possible unknowns. A great introduction to gravimetric analysis. Includes Teacher Notes, extensive background material, reproducible student handouts, and all necessary crystalline hydrate samples and specialized equipment. Complete for 30 students working in pairs.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Planning and carrying out investigations
Analyzing and interpreting data
Using mathematics and computational thinking
Constructing explanations and designing solutions

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
HS-PS1.A: Structure and Properties of Matter

Crosscutting Concepts

Scale, proportion, and quantity
Stability and change