attractive force

(immunology) the attraction between an antigen and an antibody

an electrical force linking atoms

(physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface

attraction for iron; associated with electric currents as well as magnets; characterized by fields of force

relatively weak attraction between neutral atoms and molecules arising from polarization induced in each particle by the presence of other particles

a chemical bond that involves sharing a pair of electrons between atoms in a molecule

a side bond that links two adjacent chains of atoms in a complex molecule

a chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an 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

a chemical bond in which electrons are shared over many nuclei and electronic conduction occurs

the primary linkage of all protein structures; the chemical bond between the carboxyl groups and amino groups that unites a peptide

the gravity of the sun

magnetism produced by an electric current

magnetic field creates parallel but opposing spins; varies with temperature

phenomenon exhibited by materials like copper or bismuth that become magnetized in a magnetic field with a polarity opposite to the magnetic force; unlike iron they are slightly repelled by a magnet

phenomenon exhibited by materials like iron (nickel or cobalt) that become magnetized in a magnetic field and retain their magnetism when the field is removed

materials like aluminum or platinum become magnetized in a magnetic field but it disappears when the field is removed