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Solutions in Chemistry
In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. The word “homogeneous” means “consisting of parts all of the same kind.”
Material
Day 1 – Introduction
- Student Work Packet – topic 18
Day 2 – Virtual Textbook
- Read Physical 18 – What is a Solution
- Read Physical 18 – Solutions
- Read Physical 18 – Solutes, Solvents and Solutions
Enrichment
- Lab 26 – Super Saturated Sweet Tea
- Write a letter – Solutions
- Math Conversion– Calculate one mole of a substance (pdf)
Videos
3:21 Saturation points of salt and sugar | Solutions | Chemistry
7:51 Introduction to SOLUTIONS, SOLUTE, SOLVENT – Clear & Simple
3:45 Southern Sweet Tea
Debate
One example of solutions in chemistry is found in the kitchen. People across the globe make tea. In the USA, a southern tradition for tea-making creates an extra sweet version of iced tea that many people enjoy. Some people, though, prefer iced tea without the extra sweetness. By dissolving sugar in HOT water, rather than room temperature water, extra sugar can be added – without the sugar “falling out” (or, precipitating).
- Position A: “Southern Sweet Tea” takes more effort, perhaps – but the extra sugar makes it more fun to drink.
- Position B: .Regular tea, without all the extra ‘super-saturated’ sugar water is easier to make and just as tasty.
Instructor Resources
Standard Daily Material
- Day 1 – Standard material – introduction day
- Day 2 – Standard material – reading day
- Day 3 – Standard material – make a presentation
- Day 4 – Standard material – give a presentation
- Extra! – Enrichment and remediation options
Other Topic Specific Resources
Special Notes
Instructor Emphasis:
- Science & Engineering Practice: Use mathematical and computational thinking.
- Cross-Cutting Concept: Structure and Function.