Chemistry / Unit 2 Chem 0205 short lesson, about 20 seconds
Proton
Captions available
The idea
A proton is a positively charged subatomic particle found in the nucleus, with a mass much greater than an electron's.
In practice
Every hydrogen nucleus is a single proton, the "building block" Rutherford identified inside the nuclei of heavier elements as well.
Where people slip
A proton's charge is fixed at one positive unit; only the number of protons present, never their individual charge, ever varies.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Something wrong in this lesson? Flag it · Sources for Chemistry