Bases are insoluble in water; alkalis are soluble bases.
This question is all but meaningless. There are lots of things that can be categorized as bases that are not soluble in water.
Acids.
Alkali does not Stand for anything its a name given to those bases that dissolve in water. For example NaOH is a BASE that can dissolve in water so its an alkali another important thing is that all Alkali's are bases but all bases are NOT alkali's.
when bases are placed in water, the bases release hydroxyl ions.
alkalies are bases which are solid substance that dissolve in water to form alkalies (liquid)
It depends on the identity of the base and choice of solvent
They don't dissolve (or more properly, dissociate) completely in water, only partially. Acids or bases that dissociate completely are called strong acids or bases.
something bases which can dissolve in water
Acids.
Bases can react with greases; soaps are formed, soluble in hot water.
Alkali does not Stand for anything its a name given to those bases that dissolve in water. For example NaOH is a BASE that can dissolve in water so its an alkali another important thing is that all Alkali's are bases but all bases are NOT alkali's.
when bases are placed in water, the bases release hydroxyl ions.
When a base dissolves in water, e.g NaOH it will form Na+ and OH-
Bases dissolve in water and donate hydroxide ions to solution. It will dissociate.
alkalies are bases which are solid substance that dissolve in water to form alkalies (liquid)
It depends on the identity of the base and choice of solvent
Only hydroxides of alkali metalsare vrey soluble.
Yes, there are many insoluble bases such as calcium carbonate.