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Does Dry Ice Cool Faster than Wet Ice?

based on 15 ratings
Author: Sofia PC

Grade Level: 6th - 8th; Type: Chemistry

Objective

In this experiment, students will find out whether dry ice will cool a beverage faster than wet ice.

Introduction

Regular wet ice is created when water is frozen and turns from a liquid to a solid. Dry ice, on the other hand, is not water at all. It is solid carbon dioxide. However, like water, it is also colorless and odorless--and dry ice will cool your drink just like wet ice. In this experiment, we'll discover which does the job fastest.

Research Questions

  • What are some uses for wet ice? Dry ice?
  • What are the key benefits of dry ice?

Terms to Know

  • Water
  • Ice
  • Carbon Dioxide (solid)
  • Molecular composition
  • Freezing temperature
  • Cooling

Materials

  • Dry ice (you can get this at your local drug store in the first-aid section)
  • Wet ice (from your freezer)
  • Hot beverage, like coffee or soup
  • Two small plastic containers to hold the beverage
  • Two larger plastic containers to hold the ice
  • Two thermometers
  • Kitchen scale
  • Pen and paper for notes

Experimental Procedure

  1. Either buy frozen or prepare some regular ice in the freezer.
  2. To keep the mass of the dry ice and wet ice equal, be sure to weigh each. Do not separate the dry ice that is in the pack! This is dangerous. Instead, add/subtract the regular wet ice.
  3. Put both types of ice in a plastic container.
  4. Heat up two containers of coffee or soup until it is hot. Stick a thermometer in each. Record this temperature.
  5. Set the containers containing the hot beverage inside the larger containers that has the ice inside.
  6. Observe as the temperature drops. Record the temperature in five-minute increments.
  7. So which cooled down faster? Was there even a difference?
Suggested Chart
 

 

Weights

Initial Temp.

5 mins

10 mins
15 mins
20 mins
25 mins
30 mins
Dry Ice

 

 

 

 

 

 

 

 

Wet Ice

               

Bibliography

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