Your Safer Source for Science

Since 1977


P.O. Box 219 Batavia, IL 60510

Phone 800-452-1261
Fax 866-452-1436

Mass Is Conserved—Volume Is Not! Chemical Demonstration Kit

By: The Flinn Staff

Item #: AP7445

Price: $18.25

The Mass Is Conserved Volume Is Not! Chemical Bonding Demonstration Kit shows that adding two identical volumes doesn’t always give twice the volume. Students learn that the concept relates to mass but not to volume or moles.

See more product details

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

Product Details

50 + 50 doesn’t always equal 100! Many students have heard that matter is not created or destroyed. This concept relates to mass but not to volume or moles. Show students that adding two identical volumes does not always give twice the volume when combined. Three different demonstrations are performed to show that in the combination of reactants different intermolecular bonding and densities may result—leaving the final volume a discrepant event. Demonstration kit comes complete with instructions, teaching information, sample data, a reproducible student handout and answers for the teacher.

Concepts: Conservation of mass, intermolecular forces–hydrogen bonding, neutralization, density.
Time Required: 15–20 minutes
Chemicals Provided: Ethyl alcohol, hydrochloric acid, sodium hydroxide.