Learn about cosmic rays in physics and cosmology. Get the definition, learn about particle showers, and see whether cosmic rays are dangerous.| Science Notes and Projects
Learn about alpha particles. Get the definition and learn about the alpha particle symbol and charge. See the reaction for alpha decay.| Science Notes and Projects
Get facts about the hydronium ion or oxonium. Learn how it forms and why it is important for pH calculations and other chemistry.| Science Notes and Projects
Learn what mass number means in chemistry and how it differs from atomic number and atomic mass. Get examples of how to find the numbers.| Science Notes and Projects
Learn where the electrons are located in an atom and on the periodic table. Also discover the location of valence electrons.| Science Notes and Projects
Learn what antimatter is, how it differs from regular matter, and what happens when the two collide. Get examples of antimatter in real life.| Science Notes and Projects
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
March 26 is Ferdinand Brickwedde's birthday. Brickwedde was an American physicist who co-discovered the hydrogen isotope, deuterium with Harold Urey and George Murphy. Learn his contribution and what else occurred March 26 in science history.| Science Notes and Projects
Learn about intramolecular forces. See the types of intramolecular forces and learn whether they are stronger than intermolecular forces.| Science Notes and Projects
Get the atomic nucleus definition and facts, including a look at what is inside the nucleus of an atom and how big it is.| Science Notes and Projects
Get the definitions of cations and anions. See examples of the two types of ions, learn how they are different, and see periodic table trends.| Science Notes and Projects
Get the definition of an isotope. See examples of isotopes and learn the difference between an isotope and a nuclide of an element.| 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
Get facts about tritium, the heaviest hydrogen isotope. Learn about its sources, uses, radioactive decay, and natural abundance.| Science Notes and Projects
Get the element definition in chemistry. See examples of chemical elements, learn how many there are, and see how they are identified.| Science Notes and Projects
Get the definition of energy in science, especially physics and chemistry, along with examples of different forms of energy.| 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
Learn the difference between and atom and an ion. Get definitions and examples of atoms and ions in chemistry.| 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