And there's a lot we can explain by talking about what we see in the periodic table in terms of what different trends are in grouping different elements in different spots within the periodic table.

The next parts of this series build on the service concept and define other terms by grouping concepts that relate to specific disciplines, such as analysis and design in this part.

Using the terms simple and complex carbohydrate is an old way of grouping carbohydrates according to their pre-digestion chemical structure.