Solutions
TEKS Objective
The student is expected to compare and contrast a variety of mixtures and solutions such as rocks in sand, sand in water, or sugar in water.
Essential Understanding
The student knows that matter has physical properties and those properties determine how matter is classified, changed and used.
Science Background
An Introduction to Chemical Mixtures: BioEd Online (video) - Dr. Dave Caprette describes mixtures and solutions, with examples.
An Introduction to Chemical Mixtures
by Dave Caprette, BioEd Online, www.bioedonline.org
What are Mixtures and Solutions? Virtual Chembook, Elmhurst College (website) - Overview of mixtures and solutions.
Solutions and Mixtures: Chem4Kids (website) - Basic information about solutions and mixtures, with clear illustrations and descriptions that aid in understanding the content being presented.
Signature Lesson
What Dissolves in Water? BioEd Online (video and website) - Students investigate, compare and contrast a variety of mixtures and solutions.
k8science.org
What Dissolves in Water? Related Video
BioEd Online, www.bioedonline.org
What Dissolves in Water? View and download the Activity
BioEd Online, www.bioedonline.org
- Supporting Lessons
- Extensions
- Assessment Ideas
- Literature Connections
- Related
TEKS - Additional Resources
Supporting Lessons
How Can We Find Out What Is in Water? BioEd Online (video and website) - Students use simple paper chromatography to investigate a mystery liquid composed of different substances dissolved in water.
How Can We Find Out What Is in Water? Related Video
BioEd Online, www.bioedonline.org
How Can We Find Out What Is in Water? Download the Activity
BioEd Online, www.bioedonline.org
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.
Properties of Mixtures and Solutions
University of Virginia, http://galileo.phys.virginia.edu
Elaboration Lessons and Extensions
The Science of Water: BioEd Online (website) –Complete set of lessons and professional development resources (including a short course for teachers) on the physical science and chemistry of water, the “universal solvent.”
The Science of Water
BioEd Online, www.bioedonline.org
Homogeneous and Heterogeneous Mixtures: TeachersNet (website) - Provides examples of six different simple mixtures (sand and water, for example) to use with students.
Homogeneous and Heterogeneous Mixtures
TeachersNet, http://teachers.net
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.
Assessment Ideas
Create a mixture of ½ teaspoon of ground, black pepper and water in a clear cup. Ask students to write a paragraph explaining whether the mixture represents a solution. [It is not a solution, because the materials are not mixed at the molecular level. It is a heterogeneous mixture.]
Literature Connections
Mix It Up! Solution or Mixture? Nelson, Tracy (ISBN: 978-1618102270)
Matter. Cooper, Christopher (ISBN: 978-0751361353)
Salt. Walpole, Brenda (ISBN: 978-1560740605)
Additional Resources
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.
TEKS Navigation
Grade 4
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