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chemistry
Question | Answer |
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element | any of more than 100 fundamental substances that consist of atoms of only one kind and that cannot be separated by ordinary chemical means into simpler substances |
atom | the smallest particle of an element that has the properties of the element and can exist either alone or in combination |
nucleus | the central part of an atom that includes nearly all of the atomic mass and consists of protons and usually neutrons |
proton | an atomic particle that occurs in the nucleus of every atom and carries a positive charge equal in size to the negative charge of an electron |
electron | an elementary particle that has a negative charge of electricity and travels around the nucleus of an atom |
orbital | the path taken by one body circling around another body |
configuration | : arrangement of parts or the pattern produced by such arrangement |
atomic number | a number that is characteristic of a chemical element and represents the number of protons in the nucleus |
bond | a means by which atoms, ions, or groups of atoms are held together in a molecule or crystal |
ion | an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons |