Like this: The atom is the basic building block of the Universe.
atoms are apart of everything in the world!
Compounds are comprised from [and composed of] Atoms.
The atomic mass gives the mass of the atom. It is one of the physical property of the atom.
One atom is too small to see. A helium atom is the smallest type of atom.
You can use the word "ion" in a sentence to describe an electrically charged atom or molecule, such as "When sodium loses an electron, it becomes a positively charged ion."
"The electron cloud is the space in the atom where the electrons orbit the nucleus."
Sometimes, an atom cannot be split.
Every hydrogen atom contains a single proton.
The atom is a basic unit of matter; the atom is the building block for us.
A proton is a single positive charge in the nucleus of an atom. The number of protons determine what the atom is. Hydrogen has one proton, compared to eight for oxygen.
The particles in an atom are the protons, the neutrons, and the electrons.
Electron in an atom is represented by electron cloud around the nucleus