12/10/2023 0 Comments Atom vs molecule![]() IonsĪtoms are stable when they have a full outermost electron energy level. All atoms of a given element always have the same number of protons, but may differ in the number of neutrons found in the nucleus. What chemical element is this? (Hint: 3 protons, 3 electrons) Atomic Massīecause electrons are minuscule compared with protons and neutrons, the number of protons plus neutrons gives the atom its atomic mass . ![]() ![]() Electrons , much smaller than protons or neutrons, have a negative electrical charge, move at nearly the speed of light, and orbit the nucleus at exact distances, depending on their energy.Neutrons are about the size of protons but have no charge.The number of protons in the nucleus determines what element the atom is. Protons have a positive electrical charge.At the center of an atom is a nucleus made up of two types of particles called protons and neutrons.There are two parts to an atom ( Figure below ): The smallest unit of a chemical element is an atom , and all atoms of a particular element are identical. A chemical element is a substance that cannot be made into a simpler form by ordinary chemical means. AtomsĮveryday experience should convince you that matter is found in myriad forms, yet all the matter you have ever seen is made of atoms, or atoms stuck together in configurations of dizzying complexity. Atoms are the basic building-block of all matter (including you and me, and everyone else you’ll ever meet), so if we want to know about what Earth is made of, then we have to know a few things about these incredibly small objects. Everything you can see, touch, smell, feel, and taste is made of atoms.
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