OCR Gateway Chemistry controlled assessment research

Topics: Exothermic reaction, Temperature, Chemical reaction Pages: 3 (961 words) Published: February 23, 2015
Source 1
Hotbox Food would like to present a line of delicious beverages in completely self heating cans. Thanks to these innovative containers called “Hotshots”, it is now possible to drink high quality beverages at any time and at any place. Neither an external heat source, nor any other cooking utensils are required. Drinks 2go recipes do not contain additives, preservatives, artificial colorings or any raw materials obtained from GMO (Genetically Modified Organisms).

Source 2
In one version, the inner chamber holds the food or drink, and the outer chamber houses chemicals that undergo an exothermic reaction when combined. When the user wants to heat the contents of the can, a ring on the can is pulled to break the barrier separating the chemicals in the outer chamber. In another type, the chemicals are in the inner chamber and the beverage surrounds it in the outer chamber. To heat the contents of the can, the user pushes on the bottom of the can to break the barrier separating the water from the chemicals. This design has the advantages of being more efficient (less heat is lost to the surrounding air) as well as reducing excessive heating of the product's exterior, causing possible discomfort to the user. In either case, after the heat from the reaction has been absorbed by the food, the user can enjoy a hot meal or drink.

What chemicals are used to heat up food and drink in these cans

Source 3
The source of the heat for the self-heated can is an exothermic reaction that the user initiates by pressing on the bottom of the can. The can is manufactured as three containers. A container for the beverage surrounds a container of the heating agent separated from a container of water by a thin breakable membrane. When the user pushes on the bottom of the can, a rod pierces the membrane, allowing the water and heating agent to mix. The resulting reaction releases heat thus warms the beverage surrounding it.[1] The heating agent and responsible...
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