chapter 2
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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polar | describes a molecule in which the positive and negative charges are separated
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hydrogen bond | the intermolecular force occurring when a hydrogen atom that is bonded to a highly electronegative atom of 1 molecule is attracted to 2 unshared electrons of another molecule
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cohesion | a force that holds molecules of a single material together
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adhesion | the attraction force between 2 bodies of different substances that are in contact with each other
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capillarity | the attraction between molecules that results in the rise of a liquid in small tubes
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solution | a homogeneous mixture throughout which 2 or more substances are uniformly dispersed
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solute | in a solution, the substances that dissolves in the solvent
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solvent | in a solution, the substance in which the solute dissolves
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concentration | the amount of a particular substance in a given quantity of a mixture, solution, or ore
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saturated solution | a solution that cannot dissolve any more solute under the given conditions
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aqueous solution | a solution in which water is the solvent
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hydroxide ion | the OH ion
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hydronium ion | an ion existing of a proton combined with a molecule of water; H30+
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acid | any compound that increases the number of hydronium ions when dissolved in water; acids turn blue litmus paper red and react with bases and some metals to form salts
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base | ant compound that increases the number of hydroxide ions when dissolved in water; bases turn red litmus paper blue and react with acids to form salts
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pH scale | a value that is used to express the acidity or alkalinity of a system; each whole number on the scale indicates a tenfold change in acidity. A PH of 7 is neutral, less than 7 is acidic, greater than 7 is basic
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buffer | a solution made from weak acid and its conjugate base that neutralizes small amounts of acids or bases added
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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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