Everyone knows what cola and mentos do together, and the valve says it is about to happen. The frozen moment before the bang is the click. The title just names what the image already shows, which works here because the image is the whole promise.
How the packaging works
Title
The title labels the experiment plainly and adds nothing beyond the image.
Thumbnail
The thumbnail stages both branded balloons joined by a valve, one touch from the reaction.
Remix this
If you run demos or experiments, freeze the moment just before the result so the click feels like pressing play. On a teaching channel the same move works with any process paused right before the payoff.
The transferable lesson
Freeze the moment right before the payoff
NicheScience
Click driverCuriosity GapStakes & Tension
Turn the lesson into a decision
Apply this pattern to your next video.
Bring the reference into a packaging brief, then decide what your title and thumbnail should each communicate.