Which of the Following Statements Regarding Ordinary Chemical Reactions and Nuclear

question 16

Multiple Choice

Which of the following statements regarding ordinary chemical reactions and nuclear reactions is correct?

• A)The identity of an atom never changes during a nuclear reaction.
• B)The identity of an atom may not change during an ordinary chemical reaction.
• C)There can never be a change in the total mass measured before and after a chemical reaction or a nuclear reaction.
• D)The energy change associated with a chemical reaction is always much greater than that of a nuclear reaction.
• E)The free energy of the universe always increases during nuclear reactions.

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Definitions:

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the fetus while removing waste products.

Chorion

Outermost extraembryonic membrane of amniotes; major component of the placenta in placental mammals.

Epidermis

Outermost tissue layer. In animals, the epithelial layer of skin. In plants, the dermal tissue.

Mesoderm

Middle tissue layer of a three-layered animal embryo.