Learn the Parts of an Atom
Atoms are the building blocks from which elements and compounds are made. Here's a look at the parts of an atom and how they fit together.| Science Notes and Projects
Atoms are the building blocks from which elements and compounds are made. Here's a look at the parts of an atom and how they fit together.| Science Notes and Projects
Get the names and symbols of the first 20 elements of the periodic table. Learn how to use element names to predict facts about the elements.| Science Notes and Projects
Get the definition of bond energy. Learn how it relates to the strength of a chemical bond and how energy changes when bonds break and form.| Science Notes and Projects
Get the ductility definition and see examples of ductile metals. Learn which element has the highest ductility and why.| Science Notes and Projects
Know how to assign oxidation numbers in elements, compounds, and ions. Learn the rules and see examples of how to apply them.| Science Notes and Projects
Learn how to draw a Lewis structure to show the bonding and valence electrons in a molecule. See why Lewis structures are important.| Science Notes and Projects
Learn about lanthanide contraction (lanthanoid contraction). See the trend in ion sizes and learn why it occurs.| Science Notes and Projects
This list of electron configurations of elements shows all the elements by increasing atomic number. Print the PDF as a useful study sheet.| Science Notes and Projects
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 microwave radiation. Discover the definition, properties, sources, uses, and health effects of microwaves.| Science Notes and Projects
Understand what oxidation means in chemistry. Get the oxidation definition and see examples of chemical reactions, including rusting of iron.| Science Notes and Projects
Learn why mercury is a liquid at room temperature when most metals are solids. See how electron behavior affects melting point.| Science Notes and Projects
Learn what the photoelectric effect is, how it works, and why it’s important. Get examples, Einstein’s theory, and real-world applications.| Science Notes and Projects
Learn about the Pauli exclusion principle in chemistry and physics and how it applies to the electron configuration of atoms.| Science Notes and Projects
Learn about Compton scattering or the Compton effect. Discover how it works and its formula, example problem, importance, and uses.| 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
February 15 is Galileo Galilei's birthday. Galileo was an Italian natural philosopher who was the key figure at the beginning of the scientific revolution and made several major contributions to its progress. Find out more and what else occurred on February 15 in science history.| Science Notes and Projects
December 18 is J. J. Thomson's birthday. Thomson was a British physicist who is best known for the discovery of the electron.| 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
Learn about single, double, and triple bonds. Get examples of compounds and learn the properties of these types of covalent bonds.| Science Notes and Projects
Learn about valence electrons. Get the definition and a periodic table showing the number of valence electrons for each element.| Science Notes and Projects
Learn about the octet rule in chemistry. Get the definition, see examples, and learn about exceptions to the rule.| Science Notes and Projects
Learn the difference between ionic and covalent bonds. See examples of the two types of chemical bonding and how to predict which type of bond will form.| Science Notes and Projects
Get the ionic bond definition and examples in chemistry. Learn which types of atoms participate in ionic bonding.| 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
Learn what a proton is, where it's found in the atom, and get interesting facts about protons.| Science Notes and Projects
Get the definition of electronegativity in chemistry. Learn about the trend of electronegativity on the periodic table of the elements.| 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
