32. Base your answers to the following questions on the information below A hot

Question

32. Base your answers to the following questions on the information below A hot pack contains chemicals that can be activated to produce heat. A cold pack contains chemica that feel cold when activated. " Based on energy flow, state the type of chemical change that occurs in a hot pack. 5 A cold pack is placed on an injured leg. Indicate the direction of the flow of energy between the leg and the cold pack. c What is the Law of Conservation of Energy? Describe how the Law of Conservation of Energy applies to the chemical reaction that occurs in the hot pack

Explanation / Answer

(a) Exothermic

(b) The direction of the flow of energy between the leg and the cold pack:

Energy flows from the injured leg to the cold pack. Heat flows from the higher temp to the lower temp. The cold pack absorbs heat energy from the injured leg.

(c) Law of Conservation of Energy:

Energy cannot be created or destroyed, only changed from one form to another.

The Law of Conservation of Energy applies to the chemical reaction that occurs in the hot pack:

The energy released from the hot pack is equal to the energy absorbed by the surroundings. The total energy of the system (the hot pack) is equal to the total energy of the surroundings. Everything else is constant.

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