### Clue: Potassium density fluctuates with force and atomic explosive (5,2,8)
### Answer: STICK OF DYNAMITE 
 ### Explanation: Definition: explosive
 **Anagram of**(… fluctuates …) [K(symbol for the chemical element, potassium) + DENSITY **plus**(with) F(abbrev. for "force" in physics) **plus**(and) ATOMIC].