10. Almost all of the atoms that you encounter have (stable/unstable) nuclei.

stable, because there is always an equal amount of force surrounding the atom  

explanation:

crosscutting concepts have application across all domains of science. as such, they are a way of linking the different domains of science. they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.