What's the "een" in Halloween?
in chemistry, involving substances in the same phase (solid, liquid, or gas)
A homogeneous substance is salt, NaCl.
homogeneous ho·mo·ge·ne·ous (hō'mə-jē'nē-əs, -jēn'yəs)
Of the same or similar nature or kind.
Uniform in structure or composition throughout, as of a chemical mixture.