Acids, Alkalis And Salts Flashcards
When does a base become an alkali?
A base becomes an alkali when it is dissolved in water.
What are indicators?
Indicators are substances which change colour when added to acid or alkalis.
Where of the pH scale is for acids?
Anywhere below seven, means it’s acidic.
Where on the pH scale makes a substance neutral?
If the substance has a pH of 7, it is neutral.
Where on the pH scale makes a substance alkaline?
If the pH is above 7, it is alkaline.
When acids are dissolved in water, what do they produce?
They produce hydrogen ions.
What do alkalis produced when dissolved in water?
Alkalis produce hydroxide ions.
What is formed when acids react with reactive metals?
It forms salt and hydrogen
What happens when acids react with metal oxides?
They form salt and water
What is a salt?
A salt is any compound formed by the neutralisation of an acid by a base.
