Asubstance that produces hydroxide ions when placed in water is a(n)
acid
solution
base
solvent

A substance that produces hydroxide ions when placed in water is a base. When a base is dissolved in water, the molecule will form into ions and bases produce OH- ions. Meanwhile, acids produce H+ in water.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.