Atomic Structure and Nuclear Symbols

The number of protons in an atom is called the

• mass number
• atomic number
• atomic weight
• atomic mass

Isotopes vary in the amount of....

• Neutrons
• Electrons
• Protons
• Beta Particles

Tags

NGSS.HS-PS1-8

Which of the following represents a pair of isotopes

• A
• B
• C
  Protons
• D

Tags

NGSS.HS-PS1-8

In order of most to least penetrating radiation we have

• Alpha , Beta,  Gamma
• Beta , Gamma , Alpha
• Gamma, Beta, Alpha
• Gamma, Alpha, Beta

Tags

NGSS.HS-PS1-8

How many protons are in fluorine?

• 9
• 19
• 10
• 7

Asumming we start with 100 g sample of a radioactive isotope.  How much remains after 4 half-lives

• 6.25 g
• 12.5 g
• 25 g
• 50 g

Tags

NGSS.HS-PS1-8

What is the half-life of a 100 g sample of nitrogen-16 that decays to 12.5 g of nitrogen-16 in 30.6 s?

• 30.6 s
• 25 s
• 12.5 s
• 10.2 s

Tags

NGSS.HS-PS1-8

What scientists model are displayed in the correct order?

• Thomson, Rutherford, Dalton, Bohr
• Dalton, Thomson, Rutherford, Bohr
• DecompositiDalton, Rutherford, Thomson, Bohr
• Rutherford, Bohr, Dalton, Thomson

Which drawing best represents an atom of lithium?

• Diagram A
• Diagram B
• Diagram C
• Diagram D

Tags

NGSS.HS-PS1-1

When nuclei decay, massive amounts of __________ is released.

• energy
• jello
• protons
• neutrons

Tags

NGSS.HS-PS1-8