kulabanye futhi ababulawa ngujezebeli bengelacala. wabulala abantu abanengi ababethanda ujehova. ujezebeli wayekhonza izithombe futhi esenza lezinye izinto ezimbi. ujehova wakubona konke okubi okwakusenziwa ngujezebeli. ujehova wayezamekela yini ujezebeli? Finely divided boron burns in oxygen above 600°C to give the oxide, B2O3, an acidic oxide which will dissolve slowly in water to give boric acid (B(OH)3) and rapidly in alkalis to give borates such as Na2B4O7. A number of polymeric species with B–B and B–O links are known, e.g. a lower oxide (BO)x, and a polymeric acid (HBO2)n. Although the parent acid is weak, many salts containing borate anions are known but their stoichiometry gives little indication of their structure, many of which are cyclic or linear polymers. These contain both BO3 planar groups and BO4 tetrahedra. Boric acid and the borates give a range of glassy substances on heating; these contain cross-linked B–O–B chains and nets. In the molten state these materials react with metal ions to form borates, which on cooling give characteristic colors to the glass. See borax-bead test.