Mixture as its melting point, may differ from those of the components. Some mixtures can be separated into their components by using physical (mechanical or thermal) means. Azeotropes are one kind of mixture that usually pose considerable difficulties regarding the separation processes required to obtain their constituents (physical or chemical processes or, even a blend of them). Mixtures can be either homogeneous or heterogeneous. A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties. Examples of homogeneous mixtures include alloys and alcohol in water. A heterogeneous mixture
I'm Not a Girl, Not Yet a Woman basic sequence of E♭–A♭2–Fm7–B♭ as its chord progression. "I'm Not a Girl, Not Yet a Woman" received positive reviews from music critics. "Yale Daily News" writer Catherine Halaby called it a "well-executed ballad", while observing that "it comes across as a hybrid of advice to her young female fans on how to deal with puberty, and an explanation of her girly but not childlike attitude." Jim Farber of the "Daily News" while reviewing the Dream Within a Dream Tour, called the song "sugar pop dittie", along with Spears' previous ballad single "Don't Let Me Be the Last to Know". Nikki