Homogeneous and heterogeneous mixtures mixture is air. In physical chemistry and materials science this refers to substances and mixtures which are in a single phase. This is in contrast to a substance that is heterogeneous. A solution has been a special type of homogeneous mixture. Solutions are homogeneous because the ratio of solute to solvent remains the same throughout the solution even if homogenized with multiple sources, and stable because the solute will not settle out after any period of time, and it cannot be removed by a filter or by centrifuge. This type of mixture is very stable, i.e., its particles do not
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