Learn what nucleons are in chemistry and physics. See how nucleons relate to the mass number and atomic mass of atoms.| Science Notes and Projects
Learn about subatomic particles in physics and chemistry. Discover subatomic particles in an atom and fundamental or elementary particles.| Science Notes and Projects
Get the atomic number definition. See examples of the atomic number and learn how it differs from mass number.| Science Notes and Projects
Learn what an electron is. Get its definition, learn where to find electrons, and understand the properties of this type of matter.| Science Notes and Projects
Get the definition of a neutron in chemistry in physics. Learn interesting facts about neutrons and their role within an atom.| Science Notes and Projects
Learn the difference between mass and weight. See how to measure mass and use units correctly. Get mass vs weight activities.| Science Notes and Projects
Learn why protons and neutrons stick together, how close they have to be in the atomic nucleus, and how the strong force accounts for mass.| Science Notes and Projects
The atom is the unit of matter that identifies a chemical element. Here are 10 interesting atom facts for education and entertainment.| Science Notes and Projects