Radioactivity is the emission of tiny,invisible radio signals by the nuclei of certain atoms.
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Q2: During beta decay,neutrons are converted to protons
Q3: A beta particle can also be called
Q4: Madam Curie discovered two new elements.
Q5: Antoine-Henri Becquerel discovered X-rays.
Q6: When an atom emits a beta particle,its
Q8: The symbol for a positron is
Q9: A nuclear reaction typically changes the identity
Q10: A positron particle comes from the decay
Q11: Radioactive particles can pass through matter.
Q12: Alpha particles have lower penetrating power than
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