KEY POINTS
- There are three main compounds of chemical i.e. Acids, Alkalis and Salts.
- Acids are corrosive and can burn skin.
- Solution of acetic acid is used in many foods preparation.
- The word Alkali has been taken from Arabic word which means bitter.
- Alkalis and bases are slippery to touch.
- Acids turn the blue litmus paper to red.
- Alkalis turn the red litmus paper to blue.
- Salts show no change of color on litmus paper.
- Acids react with alkalis giving a salt and water.
- Acids react with carbonates giving carbon dioxide gas.