Candy Volcano

Candy Volcano
A very sweet volcano experiment that will dazzle you and give you a popping sweet treat!

Objectives:
  • To explore the relationship between surface area of the Mentos reacting with the Carbon Dioxide of the soda.
  • To observe a chemical reaction.


Experiment Details:
  • Type: Chemistry
  • Grades 3-7
  • Difficulty of Project: Low (Level 1)
  • Cost of Completing Project: $3
  • Approximate Time: Less than 5 minutes

What You'll Need
See Video Below!
  • Large bottle of Diet Coke
  • Mentos
  • Funnel (or geyser tube)


Step-By-Step Procedure
step-1
STEP 1:
Pour out about of the Diet Coke


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step-2
STEP 2:
Place a funnel into the top of the Diet Coke (or geyser tube).
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step-3
STEP 3:
Drop about half of a pack of Mentos into the Diet Coke and back up quickly.
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step-4
STEP 4:
The volcano begins as soon as the Mentos reacts with the Diet Coke.
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STEP 5:
The volcano should spout about 20-30 feet in the air.
*Note: This experiment really does make a mess. It should probably be performed outdoors.
step-5
Observation & ConclusionThe stronger hydrogen peroxide will produce a massive amount of foam in this experiment. The sodium iodide is a catalyst. This is something that has the ability to speed up a chemical reaction and makes the hydrogen peroxide break down very quickly. When the Mentos are dropped into the diet soda, it causes a chemical reaction. The reaction takes place so quickly because Mentos have very small pores on their surface. These help to cause the reaction with the CO2 to occur very fast.
Science Fair Questions1. Would this reaction be different with a different type of candy? Which ones would work the best? Why?

2. Would this reaction work the same with a different carbonated beverage? Why?


3. Can this reaction be done if a beverage was old and was less carbonated?

Video Demonstrations
Diet Coke and Mentos Amazing Eruptions