Chemistry Unit 3 Vocab lists 3.1 and 3.2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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E=mc2 | Mass-energy equivalence; a small change in mass results in a large change in energy.
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Electrostatic Repulsion | Force which pushes objects of like charges away from each other.
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Nucleon | Nuclear particle of an atom; protons and neutrons are the two types.
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Nuclear Fission | Process in which an atomic nucleus splits to form smaller parts (lighter nuclei)
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Nuclear Fusion | Process in which two or more atomic nuclei collide at a very high speed and join to form a new atomic nucleus
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Strong force | Short range attractive interaction between protons and neutrons; holds the nucleus together.
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Nucleus | Dense region consisting of nucleons (protons and neutrons) at the center of an atom
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Alpha (α) Decay | A 2-proton, 2-neutron particle is emitted from an atomic nucleus. Resulting mass number is 4 less, and atomic number is 2 less.
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Beta (β) Decay | An electron or a positron is emitted from an atomic nucleus. Parent/daughter mass numbers are equal.
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β— Decay | Emission of an electron from the nucleus of an atom. Results in an increase in atomic number but no change in Mass Number (neutron à proton).
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β + Decay | Emission of a positron from the nucleus of an atom. Results in a decrease in atomic number but no change in Mass Number (proton à neutron).
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Gamma (ɣ) Decay | A high-energy particle (light) is emitted from an atomic nucleus.
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Radioactive Decay | Process by which a nucleus of an unstable atom loses energy by emitting particles of ionizing radiation.
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Isotope | Different versions of the same element. Same number of protons, different number of neutrons; may be radioactive.
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To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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