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.
User: Describe the particles that make up the nucleus of an atom in terms of mass and charge. Weegy: Protons, neutrons and electrons. Protons have a relative mass of 1 and a charge of +1, they are found in the nucleus of an atom. Neutrons have a relative mass of 1 and no charge, [ they are also found in the nucleus. Electrons have a relative mass of 1/1836 and a charge of -1.