Chemical bonds Flashcards
(6 cards)
Relatively weak attraction between an anion and action. Easily disrupted in water, as when salt dissolves.
Ionic bond
Shearing of one or more pairs of electrons between nuclei.
Covalent bond
single covalent bond
double covalent bond ex: carbon and oxygen, carbon and nitrogen.
Non-polar covalent
covalent bond in which electrons are equally attracted to both nuclei. May be single ore double, strongest type of chemical bond.
polar- covalent
covalent bond in which electrons are more attracted to one nucleus than to the other, resulting in slightly positive and negative regions in one molecule, May be single or double.
Hydrogen bond
week attraction between polarized molecules or between polarized regions of the same molecule. important in the three-dimensional folding and coiling of large molecules,. Easily disrupted by temperature and pH changes.
Van der waals force
weak, brief attraction due to random disturbances in the electron clouds of adjacent atoms. weakest of all bonds.