Chapter 11 : Nuclear and Particle Physics

The rate at which a radioactive element decays depends on its ____.

• quarter life

• whole life

• wonderful life

• half life

The half life of a radioactive substance:

• increases with time
• increases then decreases with time
• decreases with time
• stays the same with time

what's the half life of this substance?

• 1 day
• 2 days
• 3 days
• 4 days

Tags

NGSS.HS-PS1-8

Which of the following is NOT the unit of energy

• MeV

• J

• eV

• V

Choose the FALSE statement

• Atomic number is the number of protons in a nucleus

• Mass number is the number of nucleons in a nucleus

• Neutron number the number of neutrons in a nucleus

• Electron number is the number of electrons in a nucleus

Choose the CORRECT statement. The binding energy per nucleon

• is a measure of the nucleus stability

• of heavy nuclei is the largest

• of heavy nuclei is the smallest

• depends on atomic mass of a nuclei

The nucleus of an atom is made up of

• protons and neutrons

• protons and electrons

• protons, electrons dan neutrons

• electrons dan neutrons

Radioactive decay is spontaneous disintegration accompanied by these EXCEPT

• beta particles

• alpha particles

• gamma radiation

• neutrino

Choose the FALSE statement. Gamma ray is

• uncharged (neutral) ray and zero mass

• a positive charge

• high energy electromagnetic radiation

• does not change the parent nucleus into a different nuclide

In the standard model, the particle considered to be an elementary particle is a(n)

• proton
• neutron
• electron
• alpha particle