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Flash Cards about the Atom
Cards in this deck (7)
- 1Atomic NumberThe atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element.
- 2IsotopeIsotopes are two or more types of atoms that have the same atomic number (number of protons in their nuclei) and position in the periodic table (and hence belong to the same chemical element), and that differ in nucleon numbers (mass numbers) due to different numbers of neutrons in their nuclei.
- 3Mass NumberMass number, in nuclear physics, the sum of the numbers of protons and neutrons present in the nucleus of an atom.
- 4Average Atomic MassThe average atomic mass (sometimes called atomic weight) of an element is the weighted average mass of the atoms in a naturally occurring sample of the element. Average masses are generally expressed in unified atomic mass units (u).
- 5Radioactiveemitting or relating to the emission of ionizing radiation or particles.
- 6Nuclear DecayNuclear decay occurs when the nucleus of an atom is unstable and spontaneously emits energy in the form of radiation.
- 7Ionan atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
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- Student Sciences Flashcards on Flash Cards about the Atom, created by Gian Luca Garda Alonso on 04/06/2021.
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- Gian Luca Garda Alonso
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