In a chemical reaction, if the enthalpy change is positive, the reaction is classified as:
Correct Answer: endothermic
- Step 1: Understand what enthalpy change means. It refers to the heat content of a system during a chemical reaction.
- Step 2: Identify the sign of the enthalpy change. A positive enthalpy change means that heat is absorbed from the surroundings.
- Step 3: Recognize the classification of reactions based on enthalpy change. If heat is absorbed, the reaction is classified as endothermic.
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