Base (chemistry)
chemical substance, that can react with an acid, accepting hydrogen ions (protons) or more generally, donating a pair of valence electrons / From Wikipedia, the free encyclopedia
A base is a substance that can accept a hydrogen ion (H+) from another substance. A chemical can accept a proton if it has a negative charge, or if the molecule has an electronegative atom like oxygen, nitrogen, or chlorine that is rich in electrons. Like acids, some bases are strong and others are weak. The weak bases are less likely to accept protons, while the strong bases quickly take protons in solution or from other molecules. An acid is a base's "chemical opposite". An acid is a substance that will donate a hydrogen atom to the base.
Bases have a pH greater than 7.0. Weak bases generally have a pH value of 7ā9 while strong bases have a pH value of 9ā14.