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bonds
Term | Definition |
---|---|
Covalant bond | A chemical bond that involves sharing a pair of electrons between atoms in a molecule |
ionic bond | a chemical bond in which a METAL atom loses an electron to form a positive cation and a NONMETAL atom gains an electron to form a negative anion |
Lewis Diagram | Diagram of an atom, ion or molecule in which each dot represents a valence electron |
ion | An atom or group of atoms that has a positive or negative charge. |
anion | A negatively charged ion |
cation | A positively charged ion |
chemical bond | An attractive force that holds together the atoms, ions, or groups of atoms in a molecule or compound. |
chemical formula | a group of chemical symbols and numbers that represent the elements and the number of atoms of each element that make up a compound |
crystal lattice | the regular pattern in which a crystal is arranged; When ions bond, they form a repeating three-dimensional pattern called this |
molecule | A group of atoms bonded together |
polar covalent bond | A covalent bond between atoms that differ in electronegativity. The shared electrons are pulled closer to the more electronegative atom, making it slightly negative and the other atom slightly positive |
polyatomic ion | A covalently bonded group of atoms that has a positive or negative charge and acts as a unit |
metallic bond | a bond formed by the attraction between positively charged metal ions and the electrons around them |
alloy | a combination of two or more things, usually metals |
hydrogen bonding | in polar molecules |