What does Alkali Mean?

Answer: Bases that can dissolve in water are called alkalis. Alkalis include substances like potassium hydroxide, sodium hydroxide, etc. A soluble base has a pH value higher than 7.0.

Any of the various bases, including the ammonium and alkali metal hydroxides, neutralise acids to form salts and turn red litmus paper blue.

An alkali metal is any of the various other more or less active bases, such as calcium hydroxide and several other compounds, such as sodium and potassium carbonates, are obsolete.