Ch.14 vocab
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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| Radiometric dating | a method of determining the absolute age of an object by comparing the relative percentages of a radioactive (parent) isotope and a stable (daughter) isotope
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| Isotope | an atom that has the same number of protons (or the same atomic number) as other atoms of the same element do but that has a different number of neutrons (and thus a different atomic mass)
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| Mass number | the sum of the numbers of protons and neutrons in the nucleus of an atom
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| Radioactive decay | the disintegration of an unstable atomic nucleus into one or more different nuclides, accompanied by the emission of radiation, the nuclear capture or ejection of electrons, or fission
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| Radioactive isotope | an isotope that has an unstable nucleus and that emits radiation
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| Half-life | the time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope
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| Microsphere | a microscopic spherical structure composed of many protein
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| Coacervate | a mass of droplets of colloidal substances, such as lipids, amino acids, and sugars, that are held together by electrostatic attraction
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
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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Created by:
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