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Holt Physical Science Chapter 9

Holt Physical Science, Chapter 9, Nuclear Changes, Chapter 9 Review, Understanding Concepts, Page 308
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When a heavy nucleus decays, it may emit ....
Alpha particles, beta particles, and gamma rays
A neutron decays to form a proton and a(n) ....
Beta particle
Alpha particles ....
Are too massive to pass through paper.
Beta particles ....
Are actually electrons emitted from a decayed neutron.
Gamma rays ....
Have no electrical charge but can ionize matter.
Neutrons ....
Can travel farther through matter than either alpha or beta particles.
After three half lives, ______ of a radioactive sample remains.
One-eighth
Carbon dating can be used to measure the age of each of the following except ....
A 2600-year-old iron sword.
Of the following elements, only the isotopes of _______ are all radioactive.
Uranium
The strong nuclear force ....
Holds the atomic nucleus together.
The process in which a heavy nucleus splits into two lighter nuclei is called ....
Fission
The amount of energy produced during a nuclear fission is related to ....
The masses of the missing nuclei and particles released.
Which condition is not necessary for a chain reaction to occur?
The radioactive sample must have a short half-life.
Exposure to nuclear radiation varies from location to location because ....
The altitude varies from location to location, the activities in certain areas vary from those in other locations, and the amount of rock varies with location.
Which of the following is not a use for radioactive isotopes?
As an additive to paints to increase their durability.