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Comparing Mixtures and Solutions

Comparing Mixtures and 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.

What are Mixtures and Solutions?
by Charles Ophardt, Virtual Chembook, Elmhurst College, www.elmhurst.edu

Mixtures: Virtual Education (website) - Short page with straightforward explanations of mixtures, solutions, suspensions and colloids.

Mixtures
Virtual Education, www.virted.org

Solutions and Mixtures: Chem4Kids (website) - Basic information about solutions and mixtures, with clear illustrations and descriptions that aid in understanding the content being presented.

Solutions and Mixtures
Chem4kids, http://chem4kids.com

Signature Lesson

What Dissolves in Water? BioEd Online (video and website) – Students investigate a variety of mixtures and solutions.

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

Separating a Mixture: Perkins School for the Blind (website) - Students use various methods to separate salt from sand.

Separating a Mixture
Perkins School for the Blind, www.perkins.org

Separating Mixtures: Discovery Education (website) - Students use chromatography to separate and analyze ink mixtures from a variety of pens.

Separating Mixtures
Discovery Education, www.school.discoveryeducation.com

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

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.

Separation of a Mixture
Alabama Learning Exchange, http://alex.state.al.us

Elaboration Lessons and Extensions

Separating Mixtures: TeachEngineering (website) – Advanced content on mixtures and solutions with suggestions for additional activities.

Separating Mixtures
TeachEngineering, www.teachengineering.org

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.

Mixtures and Solutions Lesson Plans, Worksheets, Printables
Search Plan It, www.searchplanit.com

Assessment Ideas

Give students a variety of sample substances (e.g., sand and sugar mixed together, carbonated beverage, piece of concrete, salt). Ask them to identify the samples that represent a mixture and to explain their answers. [Pure salt is not a mixture; all the other examples are.] Then, have students identify the mixtures that are solutions. [The carbonated beverage, “soda,” is an example of a solution.]

Literature Connections

  

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-10: 0756946425)

Related Science TEKS

(4.4A) Tools for Collecting and Analyzing Information
The student is expected to collect, record, and analyze information using tools, including calculators, microscopes, cameras, computers, hand lenses, metric rulers, Celsius thermometers, mirrors, spring scales, pan balances, triple beam balances, graduated cylinders, beakers, hot plates, meter sticks, compasses, magnets, collecting nets, and notebooks; timing devices, including clocks and stopwatches; and materials to support observation of habitats of organisms such as terrariums and aquariums.

(4.5A) Physical Properties of Matter
The student is expected to measure, compare, and contrast physical properties of matter, including size, mass, volume, states (solid, liquid, gas), temperature, magnetism, and the ability to sink or float.

Related Math TEKS

4.14D  The student is expected to use tools such as real objects, manipulatives, and technology to solve problems.

4.15A  The student is expected to explain and record observations using objects, words, pictures, numbers, and technology.

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.

Mixtures and Solutions
Science-Class, science-class.net

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