6.8 EOU assessment PS.

Describe types of nuclear reactions such as fission and fusion and their roles in applications such as medicine and energy production. What is the characteristic of an isotope that does not change, and “defines” an element?

• mass number

• electron number

• neutron number

• proton number

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NGSS.HS-PS1-8

Describe types of nuclear reactions such as fission and fusion and their roles in applications such as medicine and energy production. Br-80 has 35 protons. How many neutrons are in the atom?

• 35

• 45

• 80

• 10

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NGSS.HS-PS1-8

Describe types of nuclear reactions such as fission and fusion and their roles in applications such as medicine and energy production. Tritium and Deuterium are two isotopes of Hydrogen, that only vary in the _________.

• number of protons

• number of electrons

• number of neutrons

• atomic number

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NGSS.HS-PS1-8

In the radon decay equation depicted above, the form of ionizing energy released is ​ (a)   . This form of ionizing energy can be stopped by ​ (b)   .

• alpha
• paper
• beta
• gamma
• aluminum
• lead

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NGSS.HS-PS1-8

Since Actinium-225 has a half-life of 10 days, if we start with 100g, after 1 month (30 days), we will have only ​ (a)   grams left. At this rate of decay, it would take ​ (b)   days until less than 1g of the original 100g of Ac-225 remained.

• 12.5
• 70

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NGSS.HS-PS1-8

The process to gather to release energy is called ​ (a)   and produces ​ (b)   mass. Currently, this form of nuclear energy can only be done sustainably in the ​ (c)   .

• fusion
• heavier
• sun and stars
• fission
• combustion
• lighter
• equal
• leaves of plants
• ocean

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NGSS.HS-PS1-8

Which of the following statements regarding the actinide series is NOT correct?

• Unstable elements.

• Used in fission chain reactions.

• Most famous of the series is Uranium (U-235).

• Found at the top right of the periodic table of elements.

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NGSS.HS-PS1-8

Which of the following is NOT a current use of fission / radioactive decay?

• Making energy in submarines.

• Making energy in community nuclear power plants.

• Making energy in spacecraft.

• Making energy in cars.

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NGSS.HS-PS1-8

In fission, a neutron is used to provoke an unstable atom into splitting, causing a _____. This process releases more neutrons which then interact with more unstable atoms. The process will continue as long as unstable atoms are present.

• chain reaction

• series of unfortunate events

• cold fusion reaction

• combustion reaction

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NGSS.HS-PS1-8

These long-tube structures are filled with neutron absorbing material used to decrease fission reactions in a nuclear reactor.

• control rods

• fuel rods

• spent fuel rods

• recycled fuel rods

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NGSS.HS-PS1-8