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Basic Chem, Water, pH

Basic Chem, Water, pH

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Tags: science   ela   biology   chemistry   rst.9-10.4   rst.11-12.4   high school   ngss   water   hs-ls1-6   ls1-6  

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The smallest unit of matter.
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Element
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Cannot be broken down by chemical methods -- defined by the number of protons
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Compound
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Composed of atoms from different elements
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Ion
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A charged molecule due to the gain or loss of an electron.
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Ionic Bond
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A bond formed through the transfer of electrons between two atoms.
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Covalent Bond
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A bond formed through the sharing of electrons between two atoms.
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Hydrogen Bond
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Attraction between a negative atom (such as oxygen) and a positive Hydrogen atom of another molecule.
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Cohesion
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The attractive force between molecules of the SAME substance.
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Adhesion
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The attractive force between molecules of DIFFERENT substances.
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Solution
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A mixture in which a solute is evenly distributed in a solvent.
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Solvent
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The substance that dissolves the solute (and is present in a greater amount)
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Solute
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The substance that is dissolved by a solvent in a solution.
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Acid
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A substance that releases a Hydrogen (H+) when dissolved in water.
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Base
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A substance that releases Hydroxide ions (OH-) when dissolved in water.
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pH
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A scale used to assess the acidity or basicity of a solution.
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Acidic
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A substance having a low pH (below 7) is said to be __.
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alkaline (basic)
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A substance having a high pH (above 7) is said to be __.
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Polarity
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__ is caused by an uneven distribution/sharing of electrons. As a result, one water molecule opposite charges.
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