4
lesson pretestMultiple Choice

Pretest

Question 4 • Physical Science

Which feature of nuclear fission reactions allows these reactions to take place in a chain reaction?

Answer
A
Thermal energy is released and heats up the reactants.
B
Neutrons start the reaction and are released during it.
C
A larger atom is formed, which can then be split.
D
More smaller atoms form that can undergo fission.
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