What is atom and what are its particles

An atom is a smallest particle of an element.

Explanation:

It's particles are proton , electron and neutron.

Atoms are the building blocks of all matter and the smallest part of a chemical element. All matter, from our bodies and the air we breathe, the Eiffiel Tower, books,

Atoms are mostly empty space. At its center, there is a nucleus which is where the majority of its mass is located. Tiny particles called protons and neutrons make up the nucleus. Protons have a positive electric charge while neutrons don't have any charge. Electrons circle around the nucleus just like all the planets in our solar system orbit orbit around the brightest star in the sky, the sun.

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d