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The Atom



gamma like charges _____ each other
proton decay that releases only energy; no particles
nucleus neutral particle
becquerel space surrounding the nucleus
atom used to control the rate of reaction in a nuclear power reactor
rutherford positive charged particle
isotope discovered radioactivity
electron an electron form a nuclear decay is a ____ particle.
fission discovered electrons
mass number opposite charges ____ each other
controlrods alpha radiation is easily stopped by this material
attract protons and neutrons combined
fusion discovered the nucleus
halflife splitting a Uranium nucleus to release energy
paper time required for 1/2 of a radioactive sample to decay
neutron ___ and ___ were the first two atomic bombs
fatmanlittleboy smallest particle of matter that retains properties
decayseries An atom with mass number 75 and 44 protons would have how many neutrons [spell out number]
beta A particle of 2 protons and 2 neutrons
alpha all the radiaoctive decays an element goes through to become stable
atomicnumber joining 2 hydrogen nuclei to form a helium nucleus
electroncloud negative particle
thirtyone number of protons in an atom
repel atoms of the same element with different mass numbers
thomson small, dense and solid

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