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It was found that the ultrastable foam film obtained by the cooperation of magnesium ions and AE3S was driven from two aspects : one is the favorable arrangement of surfactant molecules , and the other is the increase of capacity of foam films for resolutely holding water molecules deduced by a dipolar pair formed by the flexible connecting head groups of AE3S and hydrated Mg ( 2 + ) via intermolecular coactions , both related to the presence of magnesium ions .
 Chemical: magnesium; Chemical: AE3S; Chemical: AE3S; Chemical: hydrated Mg ( 2 + ); Chemical: magnesium
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: magnesium; Chemical: AE3S; Chemical: AE3S; Chemical: hydrated Mg ( 2 + ); Chemical: magnesium