Physical Science Radioactivity Question Preview (ID: 4123)


Chapter 10 Test Review. TEACHERS: click here for quick copy question ID numbers.

Alpha Particles
a) can penetrate any thickness of matter
b) are positively charged
c) consist of two protons and four neutrons
d) all of the above

As beta particles ionize atoms, they____________
a) lose energy
b) gain energy
c) neither lose nor gain energy
d) none of the above

In the equation E=mc2,
a) carbon
b) the size of the particle
c) the speed of light
d) the total energy

Which of the following occurs in the nucleaus during alpha decay?
a) Two neutrons and two electrons are gained.
b) Two protons and two neutrons are gained.
c) Two neutrons and two electrons are lost.
d) Two protons and two neutrons are lost.

What changes in the nucleus during nuclear decay by gamma rays?
a) energy content
b) atomic mass
c) atomic number
d) all of the above

A sample of plutonium-239 decays to one-eighth of its original amount after 72360 years. What is its half-life?
a) 24120 years
b) 36180 years
c) 72360 years
d) 14470 years

What are the values of x and y in the following BETA decay - Cu --> Zn + e (you need to know atomic mass and atomic number of Cu and e-)
a) x=66, y=28
b) x=66, y=29
c) x=66, y=30
d) x=33, y=28

What are the values of x and y in the following ALPHA decay? Cm --> Pu + He (you need to know atomic mass and atomic number of Cm and He)
a) x=60, y=96
b) x=236, y=94
c) x=240 , y=96
d) x=244, y=94

Archeologists use the half-life of ____________ to date organic materials
a) carbon-12
b) uranium-235
c) carbon-14
d) uranium-238

What is non-ionizing, with mass but no charge?
a) alpha particle
b) beta particle
c) gamma ray
d) neutron emission

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