Lecture 3 Flashcards Preview

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Flashcards in Lecture 3 Deck (17):
1

Adhesion

The attraction between different kinds of molecules

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Base

A substance that reduces the hydrogen ion concentration of a solution

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Buffer

Substance the consists of acid and base forms in a solution and minimizes changes in pH when extraneous acids and bases are added to solution

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Cohesion

The binding together of like molecules often by hydrogen bonds

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Heat

Total amount of kinetic energy due to random motion of atoms or molecules in body of matter

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Hydrogen ion

A single proton with a charge of 1+

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Hydrophilic

Having an affinity for water

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Hydrophobic

Having an aversion to water, forming droplets in water

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Molarity

A common measure of solute concentration.

10

Mole

The number of grams of a substance that equals it's molecular weight in daltons and contains Avogadro's number of molecules

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pH

A measure of hydrogen ion concentration ranging in value from 0-14

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Polar molecule

A molecule such as water with opposite charges on different ends of the molecule

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Solute

A substance that is dissolved in water

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Solution

A liquid that is a homogenous mixture of two or more substances

15

Solvent

The dissolving agent of a solution. Water

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Temperature

A measure of heat reflecting in degrees

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Acid

A substance that increases the hydrogen ion concentration of a solution