Your Safer Source for Science
All-In-One Science Solution
Your Safer Source for Science
Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Email [email protected]

Separation of a Mixture by Filtration—Student Laboratory Kit

By: The Flinn Staff

Item #: AP7034 

Price: $34.30

This item is temporarily out of stock. The expected available to ship date is 07/24/2024

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.

See more product details

This item can only be shipped to schools, museums and science centers

Product Details

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.


Materials Included in Kit: 
Hydrochloric acid solution, 1 M, 125 mL
Iron(III) oxide-salicylic acid mixture, 15 g
Iron(III) oxide, 15 g
Salicylic acid, 15 g
Sodium hydroxide solution, 0.2 M, 350 mL
Dishes, weighing, 1.5 g, 3½" x 3½" x 1", 15
Pipet, Beral-type, thin stem, 45

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

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.