What is the mass number?

• Number of protons

• number of electrons

• number of neutrons and electrons

• number of protons and electrons

• number of protons and neutrons

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NGSS.HS-PS1-8

What does the atomic number equal?

• The number of protons.

• The number of electrons.

• The number of neutrons

• the number of neutrons and protons.

What does radioactive mean?

• That atoms send out radio waves.

• That atoms are unstable and can break down.

• That atoms can be used to make radios.

• That atoms are stable and does not break down.

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NGSS.HS-PS1-8

What is nuclear decay?

• the breaking down of an unstable atom

• the breaking down of protons.

• the breaking down of neutrons

• the breaking down of electrons

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NGSS.HS-PS1-8

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

• nuclear decay
• nuclear mass
• isotopes
• radon

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NGSS.HS-PS1-8

What is an alpha particle made of?

• 2 protons

• 2 protons and 2 electrons

• 2 protons and 2 neutrons

• 2 neutrons and 2 electrons

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NGSS.HS-PS1-8

What is the mass number of an alpha particle?

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NGSS.HS-PS1-8

When an alpha particle is emitted from the nucleus, whar else is also emitted?

• another alpha particle

• gamma rays

• beta particles

• theta particles

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NGSS.HS-PS1-8

How does alpha particle emission change the nucleus?

• change the mass number of the atom by 4

• decrease the number of protons by 2

• decrease the number of neutrons by 2

• create a new atom

Tags

NGSS.HS-PS1-8

What is a daughter nuclei?

• the atom produced by radioactive decay

• the nuclei of another particle

• the nuclei of the proton

• the nuclei before nuclear decay

Tags

NGSS.HS-PS1-8