Welcome to the 1520 Perfect Dictionary

Click on any title to read the full article

Ion exchange

Definition: A reversible chemical process that results in the interchange of one type of ion in a solution for those of a similar charge present on an insoluble solid over which the solution is passed. The process is widely used for the softening or hard water and for the removal of undesirable substances from some industrial chemicals.

See perfect process (3).

See perfect reversibility (2).

See perfect result (5).

See perfect interchange (1).

See perfect process (1).

1520 Products

1520 Products was established in 2005 with the purpose of entertaining and teaching us on key and important aspects of life (such as marriage, sex, etc) through the playing of games which will allow us to laugh but at the same time pass a message of what is the right or ideal way.

1520 Sex Game

1520 Puzzles

1520 Marriage Game