Atoms are made up of even smaller particles called ?

Atoms are made up of even smaller particles called protons, electrons & neutrons (sub-atomic particles)

Atoms Made Up Of Subatomic Particles

Each individual atom is made up of smaller particles called electrons, protons and neutrons. These are known as subatomic particles. At the center of each atom is the nucleus. The nucleus consists of protons and neutrons.

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."