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gen chem > exam 1 > Flashcards

exam 1 Flashcards

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1
Q

crystalline solid possess…

A

rigid and long range order.
atoms, molecules, or ions occupy specific positions

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2
Q

amorphous solids lack

A

a regular 3-D arrangement of atoms

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3
Q

ionic crystalline solids have what IMF

A

ionic bonds and dispersion forces

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4
Q

ionic crystalline solids general properties

A

hard and brittle
high melting point
don’t conduct electricity unless dissolved/ dissociated

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4
Q

examples of ionic crystalline solids

A

NaCl
LiF
MgO
CaCO3

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5
Q

covalent crystalline solids IMFs

A

covalent bonds

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6
Q

covalent crystalline solids general properties

A

hard and brittle
high melting point
poor conductor of electricity

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7
Q

examples of covalent crystalline solids

A

diamond (C) SiO2, quartz

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8
Q

molecular crystalline solids IMFs

A

holding individual molecules together, not bonded network

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9
Q

molecular crystalline solids general properties

A

soft
low melting point
bad conductor of heat and electricity

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10
Q

examples of molecular crystalline solids

A

Ar, CO, I2, H2O, C12H22O11

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11
Q

metallic crystalline solids IMFs

A

metallic bonds

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12
Q

metallic crystalline solids general properties

A

variable hardness and melting point
good conductor of heat

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13
Q

examples of metallic crystalline solids

A

Na, Mg, Fe, Cu

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14
Q

a solution is a

A

homogenous mixture of two or more substances

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15
Q

a solution consists of a…

A

solvent and one or more solutes

16
Q

unsaturated solution is one that contains

A

less solute than the solvent has the capacity to dissolve

17
Q

saturated solution is one that

A

contains the maximum amount of solute that will dissolve in a solvent

18
Q

supersaturated solutions contains

A

more dissolved solute than is present in a saturated solution and are generally unstable

19
Q

bonds are broken for dissolving is

A

solute-solute
solvent-solvent
requires energy
endothermic

20
Q

bonds are formed by dissolving

A

solute- solvent
releases energy
exothermic

21
Q

a driving force for the spontaneous dissolution of a solute in a solvent is the increase of

A

entropy

22
Q
A

gen chem (3 decks)

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