Fill in the blanks with suitable words :
An acid is a compound which when dissolved in water forms hydronium ions as the only ________ ions.
A base is a compound which is soluble in water contains ________ ions. A base reacts with an acid to form a ________ and water only. This type of reaction is known as ________
Which among the following compounds are formed when an alkali metal reacts with hydrogen and halogen respectively?
An oxide act as a base when it reacts with an acid and acts as an acid when it reacts with a base. Identify the type of oxide.