A very important part of chemistry is understanding the structure of atoms and the ... written with its mass number and atomic number. Calculate the number of protons, neutrons and electrons ...

We complete the atomic structure by explaining that atoms have the same number of protons and electrons. A follow up to this example is given in the second part of the clip.

Why is knowing the atomic structure of molecules useful? Learn why, and how information like this about protein structure is shared through a publicly available database. Scientists use a variety ...