Order early for pre-holiday delivery. Flinn will be closed December 24th, 2025,
through January 4th, 2026, reopening Monday, January 5th, 2026.
Orders received after 10:30 AM Central Time on Tuesday, December 23rd, 2025,
will ship after we return.
PC2016
Price: $5.20
Most of the matter around us consists of mixtures, physical blends of variable composition, of many substances that retain their distinctive chemical identities and unique physical properties. With the Separating a Mixture by Filtration: Physical and Chemical Changes—ChemTopic™ Lab Activity, separate a mixture of charcoal and salicylic acid, and determine the percent composition of each component in the mixture.