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Chemistry Chapter 15 > Chapter 15 > Flashcards

Chapter 15 Flashcards

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1
Q

Solvent

A

The dissolving medium in a solution

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2
Q

Solute

A

Dissolved particles in a solution

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3
Q

Effloresce

A

To lose water of hydration the process occurs when the hydrate has a vapor pressure higher than that of water vapor in the air

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4
Q

Brownian motion

A

The chaotic movement of colloidal particles caused by collision with particles of the solvent in which they are dispersed

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5
Q

Anhydrous

A

Describes a substance that does not contain water

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6
Q

Deliquescent

A

Describes a substance that removes sufficient water from the air to form a solution

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7
Q

Desiccant

A

A hygroscopic substance used as a drying agent

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8
Q

Non electrolyte

A

A compound that does not conduct an electric current in aqueous solution or in the molten state

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9
Q

Hygroscopic

A

a term describing salts and other compounds that remove moisture from the air

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10
Q

Tyndall effect

A

Scattering of light by particles in a colloid or suspension which causes a beam of light to become visible

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11
Q

Electrolyte

A

A compound that conducts an electric current when it is an aqueous solution

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12
Q

Strong electrolyte

A

A solution in which a large portion of the solute exists as ions

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13
Q

Emulsion

A

the colloidal dispersion of one liquid in another

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14
Q

Weak electrolyte

A

A solution that conducts electricity poorly because only a fraction of the solute exists as ions

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15
Q

Water of hydration

A

Water molecules that are an integral port of a crystal structure

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16
Q

Suspension

A

A mixture from which some the particles settle out slowly upon standing

17
Q

Hydrate

A

A compound that had a specific number of water molecules bound to each other formula unit

18
Q

Colloid

A

A mixture whose particles are intermediate in size between those of a suspension and solution

19
Q

Surface tension

A

An inward force that tends to minimize the surface areas of liquid; it causes the surface to behave as if it were a thin skin

20
Q

Surfactant

A

Any substance that interferes with the hydrogen bonding between water molecules and thereby reduces surface tension; soaps are surfactants

21
Q

Solvation

A

A process that occurs when an ionic solute dissolves; in solution, solvent molecules surround the positive and negative ions

22
Q

Aqueous solution

A

Water that contains dissolved substances

Chemistry Chapter 15 (1 decks)

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