The Nucleus

Question 1

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

Revolt · Accepted Answer

A: Both can be represented by balanced equations.; C: Both involve a change in energy.

Question 2

Why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? Check all that apply.

Revolt · Accepted Answer

A: Chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.; C: Nuclear reactions involve changes to protons and neutrons in an atom; isotopes differ in neutrons, and so they react differently to these changes.

Question 3

Use the drop-down menus to complete each of the sentences.Isotopes behave similarly in .

Revolt · Accepted Answer

A: chemical reactions

Question 4

involve only a rearrangement of electrons, and do not involve changes in protons or neutrons.

Revolt · Accepted Answer

A: Chemical reactions

Question 5

Which would result in radioactive decay? Check all that apply.

Revolt · Accepted Answer

B: a neutron-to-proton ratio of 1:2 in a large nucleus; C: a nucleus that contains 90 protons and 100 neutrons; E: any isotope of the element uranium, which has atomic number 92

Question 6

Use the drop-down menus to answer the questions.Which type of radioactive decay produces particles with a positive charge and very small mass?

Revolt · Accepted Answer

B: beta

Question 7

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

Revolt · Accepted Answer

B: nuclear reactions

Question 8

Which type of radioactive decay produces radiation with zero mass?

Revolt · Accepted Answer

C: gamma

Question 9

New elements can be formed as a result of .

Revolt · Accepted Answer

B: nuclear reactions

Question 10

Which type of radioactive decay produces radiation that requires lead shielding?

Revolt · Accepted Answer

C: gamma

The Nucleus Answers

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