Given w = 0, an endothermic reaction has the following. - and - AH and +AE + and + + and - Which statement is FALSE? Endothermic has a positive . An exothermic reaction gives heat off heat to the surroundings. AHrxn is the heat of reaction. AErxn is a measure of heat. Enthalpy is the sum of a system's internal energy and the product of pressure and volume. If an endothermic reaction absorbs heat, then why does it feel cold to the touch? Match the words in the left column to the appropriate blanks in the sentence on the right. does not increase absorbs heat from emit heat to increases lose gain Reset Help An endothermic reaction feels cold to the touch because the reaction (acting here as the system) the surroundings. When you touch the vessel in which the reaction occurs, you, being heat to the system (the reaction), which makes you feel cold. its temperature, but part of the surroundings, The heat absorbed by the reaction (from your body, in this case) rather becomes potential energy stored in chemical bonds. Classify each process as endothermic or exothermic. Drag the appropriate items to their respective bins. Water boiling in a pot. Steam condensing on a mirror. exothermic Gasoline burning in an engine. endothermic Reset Help