Nuclear Chemistry Test Review

Radioactive elements include all those elements whose nuclei contain more than

• 83 neutrons

• 84 neutrons

• 83 protons

• 84 protons

Tags

NGSS.HS-PS1-8

Stability of a nucleus is determined by the ratio of

• protons and electrons

• protons, neutrons,and electrons

• electrons and neutrons

• protons and neutrons

Tags

NGSS.HS-PS1-8

In small atoms with stable nuclei, the proton to neutron ratio is

• equal to 1:1

• less than 1:1

• greater than 1:1

• between 1.1 and 1.8:1

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NGSS.HS-PS1-8

What are the products of the decay of Rn-222?

• alpha particle and At-218

• beta particle and Fr-222

• alpha particle and Po-218

• positron and At-222

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NGSS.HS-PS1-8

What are the products of the decay of Sr-90? Look on Reference Table N to find out the particle released (decay mode).

• a beta particle and Pa-90

• a beta particle and Y-92

• a beta particle and Y-86

• a beta particle and Y-90

Tags

NGSS.HS-PS1-8

What type of decay?

• alpha

• beta

• positron

• gamma

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NGSS.HS-PS1-8

How can atoms of some stable elements be made radioactive?

• heating them to very high temperatures

• exposing them to very high pressures

• bombarding them with high energy particles

• heating them to very high temperatures and low pressures

Tags

NGSS.HS-PS1-8

What is this an example of?

• natural transmutation

• artificial transmutation

• a fission reaction

• a fusion reaction

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NGSS.HS-PS1-8

Complete:

9 Be + 1 H → 6 Li + X

• 0 e

  -1

• 0 e

  +1

• 4 He

  2

• 0 y

  0

Tags

NGSS.HS-PS1-8

What nuclear reaction is represented by this diagram showing two small nuclei joining together?

• an endothermic fusion reaction

• an exothermic fusion reaction

• an endothermic fission reaction

• an exothermic fission reaction

Tags

NGSS.HS-PS1-8