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Natural sciences

Form, reaction and alteration of materials

Educator section

Memorandum

Examples: a grease stain is dissolved in alcohol or a detergent, coffee in water, etc.

Leaner section

Content

Activity: to determine the meaning of the term “soluble” [lo 2.3]

A drop of water consists of thousands of small water particles. Sugar also consists of small particles. When sugar is added to water the grains of sugar break down into smaller pieces. These small sugar particles fit between the particles of water. We call this mixture a solution.

Water = solvent

Sugar = dissolved substance

Give another example of a substance that can be dissolved in another substance.

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Assessment

Learning Outcome 2: Learners know, interpret and apply scientific, technological and environmental knowledge.

Assessment Standard 2.3: We know this when the learner interprets information: at the minimum, interprets information by using alternative forms of the same information.

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Source:  OpenStax, Natural sciences grade 6. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11079/1.1
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