A Ball Spins to Land on Black or Red on This Wheel
This page is the CodyCross answer for the clue below from Science Lab, Group 311, Puzzle 4 (Empirical Formula).
Question is: A Ball Spins to Land on Black or Red on This Wheel
and the answer is: ROULETTE
Word Meaning:
ROULETTE — (uncountable) A game of chance in which a small ball is made to move round rapidly on a circle divided off into numbered (usually red and black) spaces. When the ball stops, it indicates the result of a variety of wagers permitted by the game.
Definitions from Wiktionary.