(NaturalNews) According to two new studies from University of Connecticut's Human Performance Laboratory, even mild dehydration can have a significant impact on a person's mood, energy levels and mental performance. Test results show no difference between taking a 40 minute walk or sitting at a desk.
Chemical bond. A chemical bond is the physical phenomenon of chemical substances being held together by attraction of atoms to each other through sharing, as well as exchanging, of electrons -or electrostatic forces. In general, strong chemical bonds are found in molecules, crystals or in solid metal and they organize the atoms in ordered structures. Weak chemical bonds are classically explained to be effects of polarity, or the lack of it, of strong bonds.
covalent bond. n. 1. (Chemistry) a type of chemical bond involving the sharing of electrons between atoms in a molecule, esp the sharing of a pair of electrons by two adjacent atoms.oun. 1. covalent bond-a chemical bond that involves sharing a pair of electrons between atoms in a molecule. bond, chemical bond-an electrical force linking atoms. double bond-a covalent bond in which two pairs of electrons are shared between two atoms.