introduction sc/bc objective indicator content problem quit homogeneous and heterogeneous mixture
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SMP NEGERI 3 PONTIANAK
RISA HARIDZA, S.PdPHYSICS
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INTRODUCTION
Homogeneous and Heterogeneous Mixture
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STANDARD OF COMPETENCE / BASIC COMPETENCY
Standard of Competency3. Understanding the
element, compound, and mixture.
Basic Competency• 3.1. Explain the definition
of element, compound, and mixture.
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Through simple experiment, students can explain the definition of mixture.Through simple experiment, students can explain distinguish between homogenous and heterogeneous mixture.
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Based on the examples in surrounding environment, students can explain there are three types of homogenous mixture, specifically homogenous mixture in gas phase (such as air), liquid phase (such as alcohol solution in water), and solid phase (such as 18 carat gold ring).
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Based on the types of atom which include in element and compound, students can give reason that shows element and compound are pure substances.Based on the types of which include in mixture, students can give a reason that shows mixture is not a pure substance.
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OBJECTIVE
Mention the examples of mixture.Mention the definition of mixture.Mention the definition of homogenous mixture.Provide the examples of homogenous mixture.Mention the definition of heterogeneous mixture.Provide the examples of heterogeneous mixture.Provide the example of homogenous mixture in gas phase.
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OBJECTIVE
Provide the example of homogenous mixture in liquid phase.Provide the example of homogenous mixture in liquid phase.Provide the example of homogenous mixture in solid phase.Provide a reason that element is a pure substance.Provide a reason that compound is a pure substance.Provide a reason that mixture is not a pure substance.
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MIXTUREDefinitionA substance which consists of combination of some other substances which are different kind with inconsistant ratioExampleFried rice, Cake and Salt solution
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HOMOGENEOUS MIXTUREDefinitionA mixture having a uniform composition. It has no boundary layer between its components, so the component particles of the mixture cannot be differentiated anymore
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HOMOGENEOUS MIXTUREExample:
Salt solutionSugar solutionSyrupSoft drinkGas in gas
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HETEROGENEOUS MIXTUREDefinitionA mixture of two or more substance in which the substances can still be differentiated from each other.
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TYPE OF HETEROGENEOUS MIXTURESuspensionA heteregenous mixture in which the boundary layer between its components is still clear.
Example: Oil and water, iron and sand, iron powder and water
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ColloidA heteregenous mixture in which the boundary layer between its can only be differentiated by helping an ultramicroscope.
Example: Milk, smoke, fog, and jelly
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PROBLEM
Refer to your chemistry book!Practice to solve the problems in Comprehension Exercise and Evaluation Page 121 - 130