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Particle has 13 separate wooden parts representing the atoms and bonds that make a citric acid molecule.
In PARTICLE fruits become the atoms in their own molecular component – citric acid connects all fruit.

Citric acid is a weak, organic acid that occurs naturally in citrus fruits such as oranges and lemons. It is a natural preservative and is also used to add an acidic, or sour, taste to foods and soft drinks. In biochemistry, it is involved in the citric acid cycle, an important stage in the metabolism of almost all living things

on a less scientific note, my grandmother made the best lemonade I’ve ever tasted. Her recipe was based on mixing strictly equal amounts of sugar and fresh lemon juiceĀ  before adding water. Always add zest.