difference between a strong and weak base
A weak base comes from a strong acid (when the acid loses a proton or accepts an electron pair). A strong base comes from a weak acid. Generally, acid strength increases with electronegativity and size. A weak base comes from a strong acid (when the acid loses a proton or accepts an electron pair).
However, there is a specific scientific definition of 'strong' and 'weak' when used to describe acids and bases. In chemistry, a 'strong base' is a base that completely ionizes in water while a 'weak base' is a base that partially ionizes in water.