Mixtures in Which Properties of Ingredients Change (Solutions)
Students will identify changes that can occur in the physical properties of the ingredients of solutions such as dissolving salt in water or adding lemon juice to water.
The student knows that (1) matter has measurable physical properties and (2) those properties determine how matter is classified, changed and used.
What are Mixtures and Solutions? Virtual Chembook from Elmhurst College (website) - Easy-to-read chart that defines and differentiates between homogenous and heterogeneous mixtures, solutions and colloids.
Solutions and Mixtures: Chem4Kids (website) - Chem4Kids provides basic information about solutions and mixtures with clear illustrations and descriptions that aid in understanding basic chemistry.
Acids and Bases: VisionLearning (website) – Lemon juice tastes sour because it contains a weak acid. Learn about acids and how they dissolve in water.
What Dissolves in Water: BioEd Online (website) - Students investigate whether several common substances are soluble in water.
- Supporting Lessons
- Assessment Ideas
- Literature Connections
- Additional Resources
How Can We Find Out What Is in Water? BioEd Online (website) - Students use simple paper chromatography to investigate a mystery liquid composed of different substances dissolved in water.
Fuel for Living Things: BioEd Online (website) - Students make their own purple cabbage juice indicator and identify the color changes for acids and bases. Use Sessions 1 and 2 of this activity.
Properties of Mixtures and Solutions: University of Virginia (website) - Students make observations, organize and analyze information, and measure and record data while identifying, separating and determining the concentrations of components in mixtures.
Elaboration Lessons and Extensions
Homogeneous and Heterogeneous Mixtures: TeachersNet (website) - Provides examples of six different simple mixtures (sand and water, for example) to use with students.
Mixtures and Solutions Lesson Plans, Worksheets, Printables: Plan It (website) Search Plan It allows you to find lessons and other resources on the area of physical science.
- Have students create a chart of sample mixtures and non-mixtures.
- Administer performance assessments that challenge students to separate different types of mixtures. Give each group a different mixture, or provide the same mixture to each group (such as salt and water, or flour and water).
Mix It Up! Solution or Mixture? Nelson, Tracy (ISBN-13: 978-1618102270)
Matter. Cooper, Christopher (ISBN-13: 978-0751361353)
Salt. Walpole, Brenda (ISBN-13: 978-1560740605)
Mixtures and Solutions: Why Chemistry Matters. Aloian, M. (ISBN-13: 978-0778742500)
Mixtures and Solutions: Building Blocks of Matter. Richard Spilsbury (ISBN-13: 978-1403493446)
Examples and Non-Examples of Solutions and Mixtures: SlideShare (website) - Slide presentation of images showing examples and non-examples of solutions and mixtures.