<P> Metal hydroxides are hydroxides of metals . </P> <P> Metal hydroxides are also known as strong bases . Many common metal hydroxides are made up from hydroxide ions and the ion of the particular metal that it is made up of . Example: When NaOH (sodium hydroxide) is dissolved in water, it forms OH ions and Na ions . Metal hydroxides ionize completely when dissolved, so that is why they are known as strong bases . Their pH is above 7, labeling them as bases . Since ions conduct electricity, metal hydroxides carry electricity very well when they are dissolved . </P> <Ul> <Li> Aluminium hydroxide </Li> <Li> Beryllium hydroxide </Li> <Li> Cobalt (II) hydroxide </Li> <Li> Copper (II) hydroxide </Li> <Li> Curium hydroxide </Li> <Li> Gold (III) hydroxide </Li> <Li> Iron (II) hydroxide </Li> <Li> Mercury (II) hydroxide </Li> <Li> Nickel (II) hydroxide </Li> <Li> Tin (II) hydroxide </Li> <Li> Uranyl hydroxide </Li> <Li> Zinc hydroxide </Li> <Li> Zirconium (IV) hydroxide </Li> </Ul> <Li> Cobalt (II) hydroxide </Li>

One example of a hydroxide which is highly soluble in water