Make your own Apple Soda?

Key Concepts

• Dry Ice
• Sublimation
• Carbon Dioxide (CO2)
• Carbonic Acid
• Carbonation
• Temperature Reduction

Dry Ice Infusion of Beverages

This section details a method for chilling and carbonating a beverage, specifically apple juice, using dry ice. The process involves introducing solid carbon dioxide (dry ice) into the liquid.

Process and Effects:

1. Introduction of Dry Ice: The presenter opens a lid and adds dry ice to apple juice.
2. Safety Precaution: A crucial point is emphasized: the beverage is not to be served directly with the dry ice present. This is to prevent accidental ingestion of the solid dry ice, which can cause harm.
3. Dual Action of Dry Ice:
   • Temperature Reduction: The dry ice rapidly cools the apple juice to an extremely low temperature.
   • Carbonation: As the dry ice sublimates (transitions directly from solid to gas), it releases carbon dioxide (CO2) into the liquid. This dissolved CO2 forms carbonic acid, which is responsible for the carbonation.
4. Sensory Experience: The resulting carbonation provides a "tingly sensation" on the tongue.

Demonstration of Separation:

A demonstration illustrates how to safely consume the beverage after it has been infused.

• Method: The infused beverage is poured from the container holding the dry ice into a separate cup.
• Result: The dry ice, being denser and still solid, remains at the bottom of the original container, allowing the chilled and carbonated liquid to be poured out safely.

Conclusion:

The primary takeaway is the safe and effective method of using dry ice to both chill and carbonate beverages. The process leverages the physical property of sublimation of dry ice to achieve these effects, with a strong emphasis on safety protocols to avoid direct contact with the solid dry ice during consumption. The infusion results in a cold, slightly acidic, and effervescent drink.