Chapter 3
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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| Atom | The smallest particle currently known. It consists of a positve core and a surrounding space occupied by negative electrons
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| Plum-Pudding Model | Showed electrons just floating around everywhere inside a circle, with no order.
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| Gold-Foil Experiment | This experiment proved that there was more than empty space in the core of the atoms.
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| Orbitals | The model for that atom where electrons orbit the protons and neutrons.
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| Nucleus | Located in the atom, it contains protons and neutrons.
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| Proton | Have a positive charge, located in the nucleus of the atom, has a mass of 1 amu, the number of protons of each atom of an element are the same.
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| Electron | Has a negative charge, is located in a cloud sourrounding the nucleus, has a mass of 1/1836
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| Neutron | Has a neutral charge, located in the nucleus of the atom, has an equal mass to protons at 1 amu, holds atom together.
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| Mass Number | Sum of protons and neutrons, not to be confused with the Atomic Number.
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| Atomic Number | The number of protons in any given atom of an element.
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| Ion | A non-neutral atom in which the # of electrons is not equal to the # of protons.
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| Isotope | Atoms of the same element that have the same # of protons, but different #'s of neutrons
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| Atomic Mass | The mass of a specific isotype of a given atom.
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| Valence electrons | The outermost electrons of any atom, which are important in determining how the atom reacts chemically with other atoms.
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| Octet | A chemistry rule that states atoms tend to combine so that they have 8 electrons in their valence shells, giving them the same electronic configuration as a noble gas
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| Excited State | An elevation in energy level from the baseline energy state.
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| Ionization Energy | The minimum energy required to remove an electron from its atom in its ground electronic state.
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| Electron Affinity | This is the energy change when an electron is added to the neutral species to form a negative ion.
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| Electronegativity | This is a chemical property that describes the ability of an atom to attract electrons towards itself.
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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.
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.
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:
mquade
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