Instructional Video0:44
Curated Video

Molecular weight

6th - 12th
The sum of the atomic masses of all the atoms in a molecule, usually expressed in atomic mass units.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and...
Instructional Video
Tyler DeWitt, PhD

Science With Tyler De Witt: How to Calculate Atomic Mass Practice Problems

9th - 10th
In this tutorial, find out how to calculate atomic mass, by multiplying the atomic weight of an atom by the percent abundance expressed as a decimal.
Instructional Video
Khan Academy

Khan Academy: Test Prep: Mcat: Physical Processes: Atomic Nucleus: Atomic Mass

9th - 10th
Explains how we measure the mass of an atom. [8:33]