GIZMOS Nuclear Decay-ALL ANSWERS CORRECT

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Student Exploration: Nuclear Decay NCVPS Chemistry Fall 2014 Vocabulary​:​ alpha particle, atomic number, beta particle, daughter product, gamma ray, isotope, mass number, nuclear decay, positr... on, radioactive, subatomic particle Prior Knowledge Questions ​(Do these BEFORE using the Gizmo​.) The chart below gives the locations, charges, and approximate masses of three ​subatomic particles​. The approximate mass of each particle is given in universal mass units (u). The ​mass number​ of an atom is equal to the sum of protons and neutrons in the nucleus. A helium atom has 2 protons and 2 neutrons. What is the mass number of this atom? ​4 The ​atomic number​ of an element is equal to the number of protons in each atom of the element. All helium atoms have 2 protons. What is the atomic number of helium? ​2 Gizmo Warm-up While most atoms are stable, some are ​radioactive​, which means that they have a tendency to undergo spontaneous nuclear decay​. The decay of radioactive atoms generally results in the emission of particles and/or energy. [Show More]

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