The universe is the sum total of all the planetary systems,stars,nebulae,galaxies, galactic clusters,black holes, and the atoms and molecules that make all these objects. It also contains all the energy we know about, along with dark matter, which has not been directly observed. The universe...
This phenomenon is known asairglow. Airglow occurs when atoms and molecules in the upper atmosphere, excited by sunlight, emit light to shed their excess energy. Or, it can happen when atoms and molecules that have been ionized by sunlight collide with and capture a free electron. In both ca...
Learn about molecules and the water molecule definition. Learn about the water molecule structure, its properties, and what makes a molecule of...
The mass of the protons and the mass of the neutrons are almost the same. Electromagnetic force binds the electron cloud to the nucleus. A nearly identical force can allow atoms to bind together, forming molecules. Atoms exist as either electrically neutral, or ions. In an electrically ...
Your desk is a solid, your drink a liquid, and, of course, the air you are breathing is a gas! States of Matter Atomsandmoleculesdo not change. They always have the same numbers of protons and electrons. What can change, however, is how they behave. ...
He was a Nobel Prize winner in 1954 for his work in quantum mechanics, and is widely regarded as one of the most influential physicists of the 20th century. His work in the field of quantum mechanics revolutionized the way we understand the behavior of atoms and molecules....
“"To date, no credible evidence of adverse health effects has been established for cell phone use or being in proximity to cell towers… The question of adverse health effects from cell phones has been studied by scientists and health agencies since the early 1990s. In response to public conc...
Other, more complex, forms include antiferromagnetism, in which the magnetic fields of atoms or molecules align next to each other; and spin glass behavior, which involve both ferromagnetic and antiferromagnetic interactions. Additionally, ferrimagnetism can be thought of as a combination of ferromagneti...
Finally, sunlight drives atmospheric chemistry by way of solar ultraviolet light breaking down CO2 and H2O molecules that are then free to react in new ways. As a result, the changing pressure and abundance of H2O and CO2 changes the abundance of carbon monoxide (CO), oxygen (O2), ozone (...
The particles in the exosphere are extremely far apart. They don't quite fit the definition of a "gas" because the density is too low for collisions and interactions to occur. Nor are they necessarily plasma, because the atoms and molecules aren't all electrically charged. Particles in the ...