The oil is non-polar and does not dissolve the color or sugar. This is a ball-and-stick model of citric acid. Citric acid is dissolved in water in oranges, lemons, grapefruit, and other citrus fruits.

In this activity: Students conduct a reaction with citric acid and baking soda in a universal indicator ... In this example, students observe the production of both a gas and a solid, a color change ...

Glycolysis takes place in the cytoplasm. Within the mitochondrion, the citric acid cycle occurs in the mitochondrial matrix, and oxidative metabolism occurs at the internal folded mitochondrial ...