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Solubility in Water


Solubility in Water

TEKS Objective

Students will classify matter based on physical properties, including mass, magnetism, physical state (solid, liquid, and gas), relative density (sinking and floating), solubility in water, and the ability to conduct or insulate thermal energy or electric energy.

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Essential Understanding

The student knows that (1) matter has measurable physical properties and (2) those properties determine how matter is classified, changed and used.

Science Background

What are Mixtures and Solutions? Virtual Chembook from Elmhurst College (website) - Easy-to-read chart that defines/differentiates between homogenous and heterogeneous mixtures, solutions and colloids.

What are Mixtures and Solutions?
Virtual Chembook from Elmhurst College,

Solutions and Mixtures: Chem4Kids (website) - Basic information about solutions and mixtures, accompanied by clear illustrations that promote understanding of basic chemistry.

Solutions and Mixtures
by Andrew Rader, Chem4Kids,

Signature Lesson

What Dissolves in Water: BioEd Online (website) - Students investigate whether several common substances are soluble in water.

What Dissolves in Water
BioEd Online,

Supporting Lessons

How Can We Find Out What Is in Water? BioEd Online (website) - Students use simple paper chromatography to investigate a mystery liquid, comprised of different substances dissolved in water.

How Can We Find Out What Is in Water?
BioEd Online,

Elaboration Lessons and Extensions

State Your Solution: American Chemistry Society (website) - Investigation that helps students understand what it means for a liquid or a gas to dissolve in a liquid.

State Your Solution
by the American Chemistry Society,

Can Gases Dissolve in Water?: American Chemical Society (website) - Students will design experiment to measure gas in club soda.

Gases Dissolve in Water?
American Chemical Society,

Assessment Ideas

  • Have students create a chart of sample mixtures and non-mixtures.
  • As a performance assessment, create several different mixtures and challenge students to separate (or come up with plans to separate) the mixtures into their separate components.

Literature Connections

Mixtures and Solutions. Aloian, M. (ISBN-13: 978-0778742500)

Mixtures and Solutions. Karpelenia, J. (ISBN-13: 978-0756946425)

Salt. Walpole, Brenda (ISBN-13: 978-1560740605)

Matter. Cooper, Christopher (ISBN-13: 978-0751361353)

Related Science TEKS

(5.1A) Science Safety
The student is expected to demonstrate safe practices and the use of safety equipment as described in the Texas Safety Standards during classroom and outdoor investigations.

(5.1B) Recycling/Disposal of Science Materials
The student is expected to make informed choices in the conservation, disposal, and recycling of materials.

(5.2B) Ask Questions, Formulate a Hypothesis
The student is expected to ask well-defined questions, formulate testable hypotheses, and select and use appropriate equipment and technology.

(5.2C) Collect Data
The student is expected to collect information by detailed observations and accurate measuring.

(5.2D) Analyze Evidence and Explain
The student is expected to analyze and interpret information to construct reasonable explanations from direct (observable) and indirect (inferred) evidence.

(5.2F) Communicate Conclusions
The student is expected to communicate valid conclusions in both written and verbal forms.

(5.2G) Graphs, Tables, Charts
The student is expected to construct appropriate simple graphs, tables, maps, and charts using technology, including computers, to organize, examine, and evaluate information.

(5.4A) 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, prisms, mirrors, pan balances, triple beam balances, spring scales, graduated cylinders, beakers, hot plates, meter sticks, magnets, collecting nets, and notebooks; timing devices, including clocks and stopwatches; and materials to support observations of habitats or organisms such as terrariums and aquariums.

(5.4B) Safety Equipment
The student is expected to use safety equipment, including safety goggles and gloves.

Related Math TEKS

(5.11A)  The student is expected to solve problems involving changes in temperature.

(5.14D) The student is expected to use tools such as real objects, manipulatives, and technology to solve problems.

(5.15A) The student is expected to explain and record observations using objects, words, pictures, numbers, and technology.

Additional Resources

Examples and Non-Examples of Solutions and Mixtures: SlideShare (website) - Presentation of images showing examples and non-examples of solutions and mixtures.

Examples and Non-Examples of Solutions and Mixtures

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