Sleep Number King Size 2-3 inch Mattress Bed Foam Topper Pad 7000, i8, i9.
Quick Answer. The three parts of an atom are the protons, neutrons and electrons. Atoms make up the basic building blocks of matter and define the structure of elements. These parts were not officially identified until 1932.
An atom is the smallest particle of a given element. When atoms bond together, they form molecules. Two atoms of the same kind may bond together, such as in an O2 molecule, or different atoms can combine.toms are the smallest unit of an element that retains the properties of that element. The are composed of protons and neutrons in the nucleus and electrons orbiting the nucleus. A molecule is 2 or more atoms bonded together.