In the context of chemical changes, which statement is most accurate regarding energy?
A.
All chemical changes are exothermic and release energy.
B.
Chemical changes can be either exothermic or endothermic.
C.
The energy change in a chemical reaction is always independent of the physical state of the reactants.
D.
Chemical changes can only occur if they are exothermic.
Exam No：AP Chemistry Problem Set 6 Year：2024 Question No：APChemistry2024AP0455
Answer:
B
Knowledge points:
4.4 Physical and Chemical Changes
Solution:
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