교과서 질문
A 70.0-kg person had a quarter-pound cheeseburger, french fries, and a chocolate shake. (3.5) d. Using TABLE3.10, determine the number of hours of running needed to burn off the kilocalories in this meal.
1997
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3. Matter and Energy
Nature of Energy
Multiple Choice
In a compound, chemical energy is primarily contained in the:
A
Potential energy stored in the chemical bonds between atoms
B
Kinetic energy of electrons orbiting the nucleus
C
Mass of the compound converted directly into heat under normal conditions
D
Neutrons in the atomic nucleus
검증된 단계별 안내1
Understand that chemical energy in a compound is related to the energy stored due to the arrangement and interactions of atoms within the molecule.
Recall that kinetic energy refers to the energy of motion, such as electrons moving around the nucleus, but this is not the main source of chemical energy stored in compounds.
Recognize that mass converting directly into heat under normal conditions is not typical in chemical reactions; this concept relates more to nuclear reactions.
Identify that neutrons in the atomic nucleus contribute to nuclear stability but do not store chemical energy relevant to chemical reactions.
Conclude that the primary source of chemical energy in a compound is the potential energy stored in the chemical bonds between atoms, which can be released or absorbed during chemical reactions.
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