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Product 12889

By: The Flinn Staff

In the Colligative Properties Chemistry Laboratory Kit, students measure boiling points to determine how the concentration of a solution changes due to osmosis. Students also investigate the effect of sodium chloride on the boiling point.

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Product Details

How are nutrients transported through the roots of plants? Why do cucumbers shrivel up to pickles when placed in a salt solution? Why does adding antifreeze to water keep it from freezing at 0 ºC? This unique kit provides a complete lesson plan for all three colligative properties of solution—freezing-point depression, boiling-point elevation and osmotic pressure. In this three-part experiment, students first measure boiling points to determine how the concentration of a solution changes due to osmosis. Students then observe the freezing point changes of water when different chemicals are added. Finally, students use a microscale procedure to investigate the effect of sodium chloride concentration on the boiling point of the solution. Includes reproducible student handouts, detailed background information, Teacher Notes with sample data and answers to questions and all chemicals and consumable supplies needed to perform the lab.

Complete for 30 students working in pairs.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Analyzing and interpreting data
Using mathematics and computational thinking
Constructing explanations and designing solutions

Disciplinary Core Ideas

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

Crosscutting Concepts

Cause and effect
Scale, proportion, and quantity
Energy and matter

Performance Expectations

HS-PS1-3. Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.
HS-PS1-7. Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.
HS-PS2-6. Communicate scientific and technical information about why the molecular-level structure is important in the functioning of designed materials.