Why did the ice in the soda melt faster than the ice in the water?!
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Because the soda is 'boiling' with bubbles and the extra circulation encourages temperature exchange than ice sitting still in water.
Simply put, the freezing point of soda is lower than that of water. Soda has sugars, CO2 and acids which lower the freezing point, similarly to why salt water does not freeze at 32 F/0 C like drinking water. When water and ice combine, the temperature will be 32 F, this is because it is experiencing a phase transition. Depending on which way the energy is going (removing/providing) will determine if it goes into a solid or (in most cases) liquid phase. (see link below for a diagram). During a phase transition, the temperature is constant... it does not fluxuate! Meaning that when ice and water are together, the temperature will always be 32 F/ 0 C. (depending on location of earth of course, pressure plays a critical role in this. see link 2)
Now with soda, it's trying to reach it's freezing point which is below that of ice. (Meaning the temperature can fluxuate and become colder.) As a result, the ice is absorbing more energy than if it was just water and melts faster.
For a fun tip: If you add enough salt to ice water you will lower the freezing point and be able to chill items (cans/bottles) faster than if you just placed them in ice water!
Here's an experiment where you can freeze soda as soon as it's opened. http://www.stevespanglerscience.com/expe…
Hope this helps, there's quite a bit that influences the freezing rate and point... but this is the basic concept behind it.
Past class over this.
The soda contains gas (bubbles) so the particles are more free so they can diffuse with the ice and melt it
Im not 100% sure this is right LOL
1.The soda was warmer to start with
2. Soda retains heat better than water, so it melts ice faster.
The soda was warmer to start with and or there was more of it.