Αναζήτηση
Ανακάλυψε νέους ανθρώπους, δημιούργησε νέες συνδέσεις και κάνε καινούργιους φίλους
a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound
a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound
a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound