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Interactions Ch 1

Chemical Bonding

chemical bonding the combining of atoms to form molecules or ionic compounds
chemical bond the interaction that holds atoms or ions together
valence electrons an electron that is found in the outermost shell of an atom (they determine how the atom will bond)
8 or 2 the number of valence electrons which fill the energy levels
ionic bonds bonds that form when electrons are transferred from one atom to another
ion an atom which has given or taken an electron
positive ion gives (or loses) an electron
negative ion takes (or receives) an electron
atoms lose electrons energy is required
atoms gain electrons energy is given off
crystal lattice a regular pattern in which atoms bond with each other to form a crystal structure
covalent bonds bonds form when atoms share one or more pairs of electrons
molecules the smallest unit of a substance that are bond together with covalent bonds...usually 2 or more elements
electron-dot diagrams show how many valence electrons an atom has
diatomic molecules two atoms of the same element are bonded together
diatomic elements atoms willing to bond with themselves (H, O, N, and the halogens)
+2 Charge of atom with 12 protons and 10 electons
-2 charge of atom with 16 protons and 18 electrons
metallic bonds bonds that form when positive metal ions are surrounded by free-swimming electrons which are able to adjust between ions
properties of ionic bonds high melting and boiling points and they are brittle
properties of metallic bonds metals can bend without breaking, they are ductile (pulled into wire), and malleable (able to be flattened)
energy levels the way that electrons are organized around the nucleus
group numbers on periodic table help you to know how many valence electrons there are
-ide the ending of a word when it gains negative electrons
atomic number the number of protons in the atom
noble gases have a full set of valence electrons
Created by: browngdavid



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