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Product 12761

By: The Flinn Staff

Separation of a Mixture by Filtration Chemistry Laboratory Kit
mixture, mixture separation, pure substance, composition
Separation of a Mixture by Filtration Chemistry Laboratory Kit
mixture, mixture separation, pure substance, composition
The Separation of a Mixture by Filtration Chemistry Laboratory Kit is a great quantitative lab for building students’ skills in filtration. Students use physical and chemical changes to separate a mixture of iron oxide and salicylic acid.

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Classifying matter into mixtures or pure substances hinges on a key question—how is the composition affected by a physical or chemical change? In this experiment, students use both physical and chemical changes to separate a mixture of iron oxide and salicylic acid. A sample of the mixture is weighed and added to sodium hydroxide solution. After the salicylic acid dissolves, the solution is filtered to isolate the insoluble iron oxide. Hydrochloric acid is then added to the solution to precipitate the remaining salicylic acid, and the solution is filtered again to separate out the salicylic acid. Students dry and weigh each component to determine its mass percent of the mixture. A great quantitative activity for developing student lab skills in filtration and other basic laboratory techniques.

Complete for 30 students working in pairs.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Planning and carrying out investigations
Analyzing and interpreting data
Constructing explanations and designing solutions
Using mathematics and computational thinking

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
HS-PS1.A: Structure and Properties of Matter

Crosscutting Concepts

Patterns
Structure and function

Performance Expectations

MS-ESS2-1: Develop a model to describe the cycling of Earth’s materials and the flow of energy that drives this process.
HS-ESS2-5: Plan and conduct an investigation of the properties of water and its effects on Earth materials and surface processes.