Below you can find the A cubic inch of material contains a million billion billion of these each with protons & neutrons in its nucleus Jeopardy Words Answer. The answer to A cubic inch of material contains a million billion billion of these each with protons & neutrons in its nucleus has 5 letters. This clue belongs to the Science category and is part of Jeopardy Word Level 854. If you scroll near the bottom you will find other clues and answers part of level 854