A can of Coca-Cola and a can of Diet Coke are the exact same size, but something magical happens when you put them in water. The diet drink floats, but the regular one sinks.

»RELATED: How to get a job at Coca-Cola

Why is that?

While both have the same amount of liquid in them, the densities are different.

That’s because a regular Coke contains 39 grams of sugar, which makes it less dense than water.

On the other hand, a Diet Coke is less dense that water because it is made with an artificial sweetener instead, reducing the grams of sugar.

Want to learn more? Take a look at the Business Insider video below for the full breakdown.

»RELATED: The Internet isn't happy with Coke Zero's new makeover

Featured

Instructor Daniel Jean-Baptiste reminds students to "measure twice, cut once" while using a hand saw at the Construction Ready accelerated summer program at Westside Works in Atlanta on Wednesday, June 18, 2025. The program provides training for careers in construction and the skilled trades. (Abbey Cutrer/AJC)

Credit: abbey.cutrer@ajc.com