Formaldehyde is a colorless, flammable, strong-smelling chemical that is used in building materials and to produce many household products.ormaldehyde is a colorless, flammable, strong-smelling chemical that is used in building materials and to produce many household products.
Actually most of the salts are insoluble in water. Not all the salts include chloride!!! And of those witch contain chloride, silver, led and mercury salts are insoluble!!! chemically speaking, not all salts are soluble in a particular solvent under normal conditions..
Why is salt not soluble in oil but soluble in water? water is a polar molecule .so there create a electric dipole  between hydrogen (positive) and oxygen(negative).water dissociates  the ionic bond of the salt forming positiveâ¦ and negative ions .thus  result a strong interaction between water and salt.