Atomic Mass Unit

Atomic Mass Unit: Easy to understand

Imagine trying to weigh a single grain of sand on your bathroom scale. Just like it's challenging to measure something as tiny as a grain of sand with a scale meant for heavier objects, scientists face a similar challenge when trying to measure the mass of particles in atoms, which are incredibly small. The atomic mass unit (amu) acts like a specialized tool, much like a jeweler’s scale designed specifically to measure tiny grains, allowing scientists to precisely quantify the masses of atomic particles with appropriate accuracy.

Atomic Mass Unit Definition

Practice Version

Atomic Mass Unit Definition

Atomic Mass Unit: The SI unit of the masses of particles in atoms atomic mass unit. An atomic mass unit amu is a small unit of mass used to measure the masses of particles in an atom, like protons and neutrons, where one amu is approximately 112 the mass of a carbon-12 atom.