Regents Chem Periodic Table
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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| Atomic mass | how the first periodic table was arranged
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| Atomic number | how the current periodic table is arranged
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| Metals | these elements lose electrons and form positive ions smaller than their atoms.
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| Nonmetals | these elements gain electrons and form negative ions that are bigger than their atoms
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| Electronegativity | ability to attract electrons. Fluorine has the highest at 4.0
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| Ionization energy | energy required to remove outer electron(s). The noble gases have the highest. This decreases as you move down a group because the radius increases.
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| Atomic radius | distance from the nucleus to the outer electrons. Increases moving down and group and DECREASES moving left->right across a period.
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| Nuclear strength | number of protons in the nucleus. This increases across a period and is the reason that radius decreases across a period.
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| Atomic radius in a group | atoms get bigger as you move from top to bottom in a group. This is because energy levels are added.
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| Mendeleev | Scientist who created the original periodic table
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| Moseley | Scientist who created the modern periodic table
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| The two liquid elements at STP | Mercury (Hg) and Bromine (Br)
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| The 7 diatomic elements | F, Br, Cl, I, N, O and H
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| Gases at STP | all the noble gases, F, Cl, N, O, H
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| Solid | The phases of most of the elements on the periodic table (they’re metals)
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| What it means when the atomic mass doesn’t have any decimal places | the element has NO stable isotopes. It’s most likely radioactive
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| Calculating average atomic mass | multiply each isotope by its abundance (in decimal form)…then add the results up, this is the average mass!
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| Group | vertical collection of elements on the periodic table, all with the same # valence electrons and similar reactivities.
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| Period | horizontal collection of elements on the periodic table, all with the same # of energy levels.
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| Properties of metals | lost electrons to form positive ions, Fr is most reactive, malleable and ductile, conduct heat and electricity (by mov’t of electrons)
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| Properties of nonmetals | do not conduct, brittle, tend to share or gain electrons.
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| Properties of transition metals | have colored solutions, many possible charges, lose electrons from the valence level and the next level down.
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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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etucci
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