To remove an electron from an atom is always _?
Correct answer: B. Endothermic process
- A. Exothermic process
- B. Endothermic process
- C. Neutral
- D. Energy wasted
Explanation
When an electron is removed from an atom, it requires an input of energy to overcome the electrostatic attraction between the electron and the nucleus. As a result, the process is endothermic since energy is absorbed.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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