lesson 4 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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| chemical bond | is a force that holds two or more atoms together
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| valence electrons | is an outermost electrons of an atom that participates in chemical bonding
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| electron dot diagram | a model that represents valence electrons in an atom as dots around element's chemical symbol
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| covalent bond | is a chemical bond formed when two atoms share one or more pairs of valence eletrons
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| molecule | is a group of atoms held together by covalent bonding that acts as an independent unit
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| polar molecules | molecule that has a partial positive end and partial negative end because of unequal sharing of electrons
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| chemical formula | is a group of chemical symbols and number that represent the elements and the numbers of atoms of each element that make up a compound
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| ion | is an atom that is no longer electrically neutral because it has lost or gained valence electrons
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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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