(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.
electrostatic bond, electrovalent bond, ionic bond - a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion. metallic bond - a chemical bond in which electrons are shared over many nuclei and electronic conduction occurs. peptide bond, peptide linkage - the primary linkage of all protein structures; the chemical bond between the carboxyl groups and amino groups that unites a peptide.