Nuclear Chemistry

Which of the following BEST describes what occurs in a fusion reaction?

• Two low mass nuclei are joined to form one nucleus and gives off energy.

• A single nucleus divides into two or more nuclei and gives off energy.

• Electrons are shared between the nuclei.

• A chemical reaction occurs between the nuclei.

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NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What resulted from the uncontrolled series of chain reactions that occurred at the Chernobyl plant?

• oil spill

• coal mine collapse

• core meltdown

• discovery of plutonium

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NGSS.HS-PS1-8

Nuclear reactors convert heat energy into mechanical energy, used to generate electrical energy, by...

• harnessing electromagnetic discharge.

• turning a turbine with steam.

• gathering solar radiation.

• using an electron transfer system.

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NGSS.HS-PS3-3

The high energy yields created by nuclear fission are due to...

• binding nuclei.

• hydrogen bonding.

• secondary recovery.

• chain reactions.

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NGSS.HS-PS1-8

How many half-lives does it take a radioactive substance to decay until only one-eighth of the original substance remains?

• two

• three

• six

• eight

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NGSS.HS-PS1-8

The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?

• 25g

• 50g

• 75g

• 100g

Tags

NGSS.HS-PS1-8

Where does the energy released in a nuclear decay reaction come from?

• electrons

• the binding energy of the nucleus

• positrons

• chemical bonds

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NGSS.HS-PS1-8

What occurs in a nuclear power plant when Uranium-235 splits into two smaller isotopes?

• nuclear fusion

• nuclear fission

• a chemical reaction

• a neutralization reaction

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NGSS.HS-PS1-8

The cells most easily damaged by high energy radiation are those that...

• divide quickly.

• carry oxygen.

• divide slowly.

• carry iron.

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NGSS.HS-LS1-4

In 2011, a 15-meter-tall tsunami caused by an undersea earthquake seriously damaged a nuclear power plant on the coast of Japan. What pollutant resulted from the accident that is harmful to organisms?

• ozone depletion

• acid rain

• radioactive gases

• global warming

Tags

NGSS.HS-PS1-8