chapter 4
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 electron of an atom that participates in chemical bonding
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electrons dot diagram | a model hat represents valence electrons in an atom as dots around the elements chemical symbol
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covalent bond | is a chemical bond formed when two atoms share one or more pairs of valence electrons
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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 moleule | a molecule that has a partial positive end and a partial negative end because of unequal sharing of electrons
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chemical formula | is a group of chemical symbols and numbers that represents the elements
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ion | is an atom that is no longer electricity neutral because it has lost or gained valence electrons
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ionic | the attraction between positively and negatively charged ions
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metallic bond | is a bond formed when many metal atoms share their pooled 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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