Chemistry ll
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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| Mole | the quantity of anything that has the same number of particles found in 12.000 grams of carbon-12.
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| Electron configuration | the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals.
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| Excited state | any quantum state of the system that has a higher energy than the ground state
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| Photon | an elementary particle, the quantum of all forms of electromagnetic radiation including light.
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| Electron affinity | the change in energy (in kJ/mole) of a neutral atom (in the gaseous phase) when an electron is added to the atom to form a negative ion. In other words, the neutral atom's likelihood of gaining an electron.
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| Ionization energy | the amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated gaseous atom to form a cation.
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| Avogadro's number | 6.0221409e+23
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| Pauli exclusion principle | two identical fermions cannot occupy the same quantum state simultaneously.
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| Orbit | a mathematical expression, called a wave function, that describes properties characteristic of no more than two electrons in the vicinity of an atomic nucleus or of a system of nuclei as in a molecule.
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| Electronegativity | a measure of the tendency of an atom to attract a bonding pair of electrons.
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| Electromagnetic spectrum | electromagnetic radiation is classified by wavelength into radio wave, microwave, terahertz (or sub-millimeter) radiation, infrared, the visible region that is perceived as light, ultraviolet, X-rays and gamma rays.
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| Ground state | the lowest energy state of an atom or other particle.
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| Hund's rule | every orbital in a sub-shell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.
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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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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.
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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