Chemistry: Atomic Structure & Periodic Table
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| atom | The smallest particle into which an element can be divided and still have the properties of that element.
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| proton | A positively – charged particle that is located in the nucleus of an atom.
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| neutron | A particle with no charge that is located in the nucleus of the atom.
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| electron | A negatively – charged particle that is located outside of the nucleus of the atom.
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| nucleus | The center of an atom, containing the protons and neutrons.
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| electron cloud | The region inside an atom where electrons may be found.
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| energy level | A specific area in an atom at a definite distance from the nucleus.
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| valence electrons | The electrons in the outermost energy level of an atom.
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| atomic number | The number of protons in the nucleus of an atom.
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| atomic mass | The average mass of one atom of an element.
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| electric charge | The sum of the charges within an atom.
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| Periodic Table of Elements | A chart where all of the elements are arranged according to their atomic number and properties
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| group | A vertical column of elements on the periodic table.
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| period | A horizontal row of elements on the periodic table.
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| physical property | A property of a substance that can be observed without changing the identity of the matter.
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| chemical property | A property of a substance that is based on its ability to react with another substance.
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| metal | An element that is shiny, ductile, malleable, and a good conductor.
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| nonmetal | An element that is not shiny, ductile or malleable and is not a good conductor.
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| metalloid | An element that has properties of both metals and nonmetals.
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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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