Which branch of chemistry is primarily concerned with the study of energy changes during chemical reactions?

• A. Electrochemistry
• B. Organic chemistry
• C. Analytical chemistry
• D. Thermochemistry

Answer: (D)

Verified step by step guidance

1. Understand that the question asks about the branch of chemistry focused on energy changes during chemical reactions.
2. Recall that Electrochemistry deals with the relationship between electricity and chemical reactions, especially redox reactions.
3. Recognize that Organic Chemistry studies the structure, properties, and reactions of carbon-containing compounds.
4. Know that Analytical Chemistry involves techniques and methods to determine the composition of substances.
5. Identify that Thermochemistry is the branch of chemistry that specifically studies the heat and energy changes that occur during chemical reactions.