PHYSICAL PROPERTIES OF BASE
  1. They have a bitter taste.
  2. They have slippery touch.
  3. They conduct electrically.
  4. It turns red litmus to blue.
  5. It turns colorless phenolphthalein to pink
CHEMICAL PROPERTIES OF BASE
 
   REACTION WITH ACIDS:

BASE + ACID SALT + WATER

KOH + HCl KCl + H2O

NaOH + HCl NaCl + H2O

   REACTION WITH SALTS
 

FeCl3 + 3NaOH Fe(OH)3 + 3NaCl

2CrCl3 + 6NaOH 2Cr(OH)3 + 6NaCl

MgCl2 + 2NaOH Mg(OH)2 + 2NaCl

   REACTION WITH METALS
 
2Al + 2NaOH + 2H2O 2NaAlO2 + 3H2
Zn + NaOH + H2O Na2ZnO2 + 2H2
Si + 2NaOH + H2O Na2SiO3 + 2H2
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