Nuclear Chemistry

Which type of radiation has the greatest penetrating power?

• Alpha particle

• Beta particle

• Gamma ray

• Neutron emission

Tags

NGSS.HS-PS4-4

The technetium-99 isotope has a half-life of 6.0 hours. If 100.0 mg were injected into a patient how much remains after 18 hours?

• 33.0 mg
• 12.5 mg
• .33 mg
• 15.8 mg

Tags

NGSS.HS-PS1-8

Barium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10 minutes to set up an experiment using barium-122, how much barium-122 will be left when the experiment begins?

• 0.25g
• 2.5g
• 25g
• 80g

Tags

NGSS.HS-PS1-8

What does it mean when an element is radioactive?

• Atom emits radiation

• Nucleus is unstable due to uneven proton to neutron ratio

• Nucleus changes to become stable

• All options listed.

Tags

NGSS.HS-PS1-8

The time taken for half of an amount of radioactive atoms to decay.

• Nuclear fusion
• Full-life
• Dead time
• Half-life

Tags

NGSS.HS-PS1-8

After the nucleus of a radioactive element undergoes changes, the element can transform into ...

• A different isotope of the same element.

• An entirely different element.

• Both options listed.

• Neither option listed.

Tags

NGSS.HS-PS1-8

The process of nuclear change in an atom of radioactive material is called... 

• nuclear decay
• nuclear mass
• isotopes
• radon

Tags

NGSS.HS-PS1-8

Which of the following is an example of nuclear fusion? 

• A plutonium atom is used to start a chain reaction that detonates a nuclear weapon 
• A uranium atom is split apart into lighter elements
•  Two hydrogen atoms are combined to form a helium atom
• Two hydrogen atoms bond with an oxygen atom to form a water molecule 

Tags

NGSS.HS-PS1-8

In what part of an atom can protons be found? 

• Inside the electrons
• Inside the neutrons 
• Inside the atomic nucleus 
•  Inside the electron shells

Tags

NGSS.MS-PS1-1

Which type of nuclear radiation is being emitted here?

• Alpha

• Beta

• Gamma

• Neutron emission

Tags

NGSS.HS-PS1-8