1. when making an eh ph diagram oxidation half reactions are considered

sometimes

2. pourbaix diagram consists of redox reactions

sometimes (2 species)

3. microstructure of the metal can be obtained from the temperature composition diagramsnever

4. gold in vacuum has lower surface energy the gold in seawater

5. surfactant decrease surface free energy of a material

always

6. negative interaction parameter value increases the henrian activity of a species

never

7. low contact angle denote poor wetability

never

8. surfaces are interfacessometimes

9. a spherical copper would have a lower free energy compared to a cubic one

sometimes