11561
Competing effects of hydrophilic ( copper oxides and hydroxides ) and hydrophobic ( elemental sulfur ) species on the mineral surface under oxidizing conditions at pH 4 and the change in surface roughness at pH 10 may contribute to the observed effects of electrochemically controlled oxidation on enargite hydrophobicity .
 Chemical: copper oxides and hydroxides; Chemical: sulfur; Chemical: enargite
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: copper oxides and hydroxides; Chemical: sulfur; Chemical: enargite