What is radioactive decay?, the creation of atoms, unstable nucleus loses energy by radiation, the heating of atoms, the mixing of electrons, A material is considered radioactive if it contains…, stable nuclei, water molecules, unstable nuclei, electrons only, The decay rate depends on, the color of substances, the number of undecayed nuclei present, the temperature only, the amount of time, If there are more radioactive atoms, the decay will be, faster, Slower, the same, impossible, What happens to the decay rate over time?, it only increases, STAY COSNTANT (right answer), stops immediately, it slows down, what is half time?, The time for all atoms to disappear, The lifetime of a nucleus, The time for half of a radioactive substance to decay, The time of radiation travel, After one half-life, 100 g of a substance becomes:, 50, 52, 67, 91, What does the decay constant (λ) represent?, The probability of decay per unit time, The speed of light, The mass of nucleus, The initial number of nuclei, In alpha (α) decay, the nucleus emits:, an election, a helium nucleus, a photon, a neutron, Gamma (γ) decay produces:, a proton, a helium nucleus, an electron, a photon

physic

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