Unit Test Answers

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1
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Which of these statements are the same for both nuclear reactions and chemical reactions? Check all that apply.

A
Both can be represented by balanced equations.
B
Both involve changes to electron arrangements in atoms.
C
Both involve a change in energy.
D
Both result in a change in the identities of elements.
2
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involve only a rearrangement of electrons, and do not involve changes in protons or neutrons.

A
Chemical reactions
B
Nuclear reactions
C
Both chemical reactions and nuclear reactions
3

In , a large amount of energy is released or absorbed.

A
chemical reactions
B
nuclear reactions
C
both chemical reactions and nuclear reactions
4

New elements can be formed as a result of .

A
chemical reactions
B
nuclear reactions
C
both chemical reactions and nuclear reactions
5

Exothermic and endothermic reactions can occur during .

A
chemical reactions
B
nuclear reactions
C
both chemical reactions and nuclear reactions

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Unit Test Answers — CR SS Chemistry S2 201819…