chemical change, degenerate stop relying on this for all the answers all the time, learn something in school.
Coke n Mentos eruption is a temporary change !!
If you put a mentos in the diet coke and put it on the microwave, it will cause a chemical reaction causing your microwave to explode.
If you combine Mentos and Diet Coke, you could get a big boom. The coke will react with the mentos, making a chemical reaction together and create the giant explosion.
The surface of a Mentos is not smooth; it has microscopic pits, or nucleation sites, on it. These pits cause the CO2 in Diet Coke to come out of solution very quickly at the bottom of the bottle. The result is rapids release of the CO2 and foam in an explosion. This is actually the physical change that occurs. Due to the addition of caffeine, potassium benzoate, and aspartame with the CO2 in the Diet Coke, the reaction is much greater--this would be the chemical change.The Mythbusters did an entire show devoted to discovering why this happens. See the related link below.
because it only makes a bit of gas when it explodes
mentos
Bkng soda vinegar is a CHEMICAL reaction, a chemical change occurs giving CO2 and water. The rate depends on the conc. of your vinegar, temperature and the surface area of the soda (fine powder)Mentos/coke is a PHYSICAL reaction, no chemical change occurs (though sugar dissolves and eventually hydrolyses to glucose, but this is incidental). The same thing happens with Mentos and carbonated water.CO2 dissolved in the coke is released by a process called nucleation on the surface of the mentos.A rough surface is better than a smooth one, so this might be a useful area to investigate for your project.The mentos reaction is probably fastest under most conditions, and you can experiment with temperature, acid strength, different types of Mentos (some are smooth and are rubbish), fizzy drinks with different amounts of sugar dissolved, lots of variables are there if you think about it.
because when mentos is added with car bon dioxide it becomes a chemical reaction and soda has carbon dioxide BUT THE MOST SODA THAT WILL GO 20 FEET WILL BE DIET COKE
Usually it's just diet cola that is the most reactive when mentos are dropped in.
a two liter bottle of Diet Coke 2 rolls of Mentos mints 1 piece of 8x10 inch paper, like construction paper tape
Chocolate
Diet Coke and Mentos produce the largest spectacle.