AnswersTN-Physical Science SC 26-27 For CreditTypes of Radioactive Decay

Types of Radioactive Decay Answers

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2
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[image 1] H + [image 2] H [image 3] [image 4] He + [image 5] nThis represents a reaction

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Answer:

nuclear

3
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Identify whether each reaction represents a chemical reaction or a nuclear reaction by filling in the blank with the word ‘chemical’ or ‘nuclear’.Cl [image 1] + H [image 2] [image 3] 2HClThis represents a ⇒ chemical reaction.

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Answer:

chemical

4

Which statement best describes the two reactions?A [image 1] B [image 2]

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A
Reaction A involves a greater change, and reaction B involves a change in element identity.
B
Reaction B involves a greater change and a change in element identity.
C
Reaction A involves a greater change and a change in element identity.
D
Reaction B involves a greater change, and reaction A involves a change in element identity.
5

Explain why isotopes of the same element behave differently in nuclear reactions but not in chemical reactions.

Answer:

Isotopes of the same element have the same number of protons and electrons but different numbers of neutrons. Because chemical reactions involve electrons, isotopes generally behave similarly in chemical reactions. Nuclear reactions involve the nucleus, where differences in neutron number can affect how isotopes behave.

6

Which of the following did you include in your response?

A
Isotopes of the same element differ only in neutron numbers.
B
Nuclear reactions involve changes to the protons or neutrons in an atom’s nucleus, but not changes to its electrons.
C
Chemical reactions involve changes to the electrons in atoms, but not changes to its protons or neutrons.
D
Isotope behavior only differs when a reaction involves neutrons.
7

Question text not available

Answers:
Selection 1:particle with two protons and two neutrons
Selection 2:high-energy photon
Selection 3:intermediate
Selection 4:highest
Selection 5:thin cardboard
8

Use the drop-down menus to complete the corresponding cells in the table to the right.A electron or positronhigh-energy photon ✔ particle with two protons and two neutrons

Answers:
Selection 1:particle with two protons and two neutrons
Selection 2:high-energy photon
Selection 3:intermediate
Selection 4:highest
Selection 5:thin cardboard
9

B electron or positron✔ high-energy photon particle with two protons and two neutrons

A
electron or positron
B
✔ high-energy photon
C
particle with two protons and two neutrons
10

C highestlowest✔ intermediate

A
highest
B
lowest
C
✔ intermediate
11

D ✔ highestlowestintermediate

A
✔ highest
B
lowest
C
intermediate
12

E thin metallead bricks✔ thin cardboard

A
thin metal
B
lead bricks
C
✔ thin cardboard

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