Mixtures that Maintain Physical Properties of their Ingredients
Students will demonstrate that some mixtures maintain physical properties of their ingredients such as iron filings and sand.
The student knows that (1) matter has measurable physical properties and (2) those properties determine how matter is classified, changed and used.
Separating Mixtures: General Chemistry Online! (website) - Easy-to-read chart identifies different ways to separate mixtures, from magnets to filtration.
A Magnetic Personality: TeachEngineering (website) - Introductory lesson on magnetism with a good background section on magnets.
Mixtures: Virtual Education (website) - Short page with straightforward explanations of mixtures, solutions, suspensions and colloids.
Eat Iron? TeachEngineering (website) - Students learn that components of a heterogeneous mixture (corn flake cereal) conserve their properties, and also investigate ways to physically separate the mixture’s components, using a magnet.
- Supporting Lessons
- Assessment Ideas
- Literature Connections
- Additional Resources
Separation of a Mixture: Alabama Learning Exchange (website) - Students explore mixtures, recognize that a mixture is created when two or more materials are combined, and design their own procedures for separating a mixture of four ingredients.
Messin’ with Mixtures: TeachEngineering (website) - Students investigate the properties of trail mix, a heterogeneous mixture, as if it were a contaminated soil sample. They learn that physical means can be used to separate heterogeneous mixtures into their component parts, and that when separated, all the parts equal the whole.
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.
- Give students performance assessments that challenge students to separate different types of mixtures.
- Make a mixture of salt, sand and iron filings and ask students to devise and test a plan to separate the three components.
Have students create different mixtures and explain the properties of each.
Have students research different types of mixtures and how they are used in everyday life.
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)
Iron. Hasan, Heather (ISBN-13: 978-1404201576)
Mixtures and Solutions: Why Chemistry Matters. Aloian, M. (ISBN-13: 978-0778742500)
Mixtures and Solutions: Reading Essentials in Science. Karpelenia, J. (ISBN-13: 978-0756946425)
Cleaning Water: ACS Chemistry for Life (website) - Investigate what it takes to clean up wastewater.
Mixtures and Solutions: Science-class.net (website) - Links to activity labs, quizzes, sideshows, and other resources to help you present and teach concepts related to mixtures and solutions.