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22 Cards in this Set
- Front
- Back
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An alpha particle is very heavy and can be stopped easily by.....
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air or paper
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A helium nucleus is written as...
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⁴₂He
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An alpha particle has a ____ charge and a mass of ____ units.
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positive 2
4 |
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A radioactive particle that's negatively charged, very lightweight, and can be stopped by metal is....
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Beta particle
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A beta particle has a charge of _____ and a mass of ____ units.
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negative
zero (practically) |
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The type of radation that is not a particle, but instead is a type of light is...
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gamma radiation
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It takes ____ to stop gamma rays.
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Many thicknesses of lead
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A particle with no charge a mass of 1 atomic mass unit is a ....
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neutron
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Name of the nuclear process where an element changes into another element....
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Transmutation
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Nuclear process where 2 smaller atoms combine together to make a larger one, releasing lots of energy in the process is....
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fusion
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Nuclear process where 1 large atom is split into smaller parts, releasing lots of energy in the process is....
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Fission
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The time it naturally takes for a radioactive isotope to change into another element is called....
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Half-life
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What percentage of an isotope will remain after 5 half-lives have occurred?
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3.125%
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The number of protons and neutrons together in an element is called the .....
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atomic mass
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The number of protons in an element is the
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atomic number
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This symbol, ⁴₂He, is for ...
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An alpha particle
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This symbol, ⁰-₁e, is for the Beta particle, which is really just an....
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electron
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This symbol, ¹₀n, is for a ____.
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neutron
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This particle, ¹₁H, is a....
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Hydrogen atom or proton
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The 238 in this particle, ²³⁸₉₂U, represents ...
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Atomic mass or number of protons & neutrons together
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The 92 in this particle, ²³⁸₉₂U, represents the ....
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number of protons or positive charges
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The 1 & the 0 in this particle, ¹₀n, mean...
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It has a mass of 1, but has a charge of 0
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