8367
These species were produced upon electron bombardment of a mixture of naphthalene ( C ( 10 ) H ( 8 ) ) and p - H ( 2 ) during matrix deposition .
 Chemical: naphthalene; Chemical: C ( 10 ) H ( 8 ); Chemical: p - H ( 2 )
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: naphthalene; Chemical: C ( 10 ) H ( 8 ); Chemical: p - H ( 2 )