A selection of everyday products that have alkaline properties. From left to right: indigestion tablets (antacids), toothpaste, cream cleaner, bleach, metal polish, oven cleaner, baking powder. Alkalis react with and can neutralise acids. Indigestion tablets help neutralise excess stomach acid.
So, what are alkalis give two examples?
Alkali salts are soluble hydroxides of alkali metals and alkaline earth metals, of which common examples are: Sodium hydroxide – often called "caustic soda" Potassium hydroxide – commonly called "caustic potash" Lye – generic term for either of the previous two or even for a mixture.
What is an acid and an alkali?
The pH scale measures how acidic or alkaline a substance is. Substances with a pH of 7 are neutral, substances with a pH greater than 7 are alkaline (or 'basic') and substances with a pH lower than 7 are acidic. Alkalis are 'bases' that are soluble in water. (All alkalis are bases but not all bases are alkalis.)
What is an acid alkali and base?
When bases are dissolved in water, they are known as alkalis. Salts are made when an acid reacts with a base, carbonate or metal. The name of the salt formed depends on the metal in the base and the acid used. For example, salts made using hydrochloric acid are called chlorides.