Tuesday, October 05, 2010

Is the same substance?

Guess if the sample 1 and 2 belong to the same substance. Pay attention to their properties shown bellow:
Properties
Escribe un comentario con tu respuesta. No olvides decir por qué has llegado a esa conclusión.
Fuente: Editorial Oxford

1 comments:

Milagros López said...

Nobody knows the answer? I can´t believe it. Come on!