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Chemistry > Exam 2 > Flashcards

Exam 2 Flashcards

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1
Q

VSEPR Theory

A

predicts molecular shape and minimizes repulsion

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2
Q

Molecular geometry of a molecule with 3 bonded atoms and 1 lone pair.

A

trigonal pyramidal

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3
Q

Molecular geometry of a molecule with 4 bonded atoms and 1 lone pair

A

seesaw

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4
Q

Molecular geometry of a molecule with 5 bonded atoms.

A

trigonal bipyramidal

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5
Q

Molecular geometry of a molecule with 2 bonded atoms and 2 lone pairs.

A

bent

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6
Q

Molecular geometry of a molecule with 2 bonded atoms and 1 lone pair.

A

bent

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7
Q

Molecular geometry of a molecule with 3 bonded atoms and 2 lone pairs.

A

T-shaped

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8
Q

Molecular geometry of a molecule with 6 bonded atoms

A

octahedral

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9
Q

Molecular geometry of a molecule with 2 bonded atoms and 3 lone pairs

A

linear

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10
Q

Valence bond theory

A

covalent bonds form when half-filled atomic orbitals of 2 atoms overlap

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11
Q

A molecule with a steric number of 3 has a hybridization of ____.

A

sp²

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12
Q

A molecule with a steric number of 4 has a hybridization of ___.

A

sp³

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13
Q

A molecule with a steric number of 2 has a hybridization of ____.

A

sp

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14
Q

Hybridized orbitals make _____ bonds.

A

sigma

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15
Q

Unhybridized p orbitals make _____ bonds.

A

pi

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16
Q

Isomers

A

compounds with the same chemical formula, but different molecular structures

17
Q

Diamagnetic molecules (have/don’t have) lone pairs and are (attracted to/repelled) by magnetic fields

A

don’t have & repelled

18
Q

Paramagnetic molecules (have/don’t have) lone pairs and are (attracted to/repelled) by magnetic fields

A

have & attracted to

19
Q

Solution

A

homogenous mixture of 2 or more substances

20
Q

Solvent

A

component of a solution that has the largest moles

21
Q

Solute

A

component of a solution that is being dissolved

22
Q

Miscible liquids

A

can dissolve

23
Q

Immiscible liquids

A

hard to dissolve

24
Q

Viscosity

A

measure of a liquids resistance to flow

25
Q

Density of water becomes (less/more) dense when freezing.

A

less

26
Q

Concave meniscus: (adhesion/cohesion)

A

(adhesion) liquid molecules are attracted to molecules on container

27
Q

Convex meniscus: (adhesion/cohesion)

A

(cohesion) liquid molecules are attracted to each other

28
Q

Electrolytes

A

a solute that produces ions that move

29
Q

Bronsted-lowry definition of an acid and base

A

acid: proton donor; base: proton acceptor

30
Q

Amphiprotic

A

substances that can function as an acid or a base

31
Q

Titration determines that concentration of a (solvent/solute)

A

solute

32
Q

All compounds containing these ions are soluble:

A

group 1, ammonium, nitrate, perchlorate, acetate

33
Q

Chlorine, Bromine, and Iodine are soluble, except when paired with:

A

silver, copper, mercury, lead

34
Q

Sulfate is soluble, except when paired with:

A

barium, calcium, mercury, lead, strontium

35
Q

Compounds containing these ions are insoluble, except when paired with G1 and ammonium:

A

fluorine, oxygen, carbonate, phosphate, chromate, arsenate, oxalate

36
Q

Hydroxide and sulfur are insoluble except when paired with:

A

calcium, strontium, barium, G1, ammonium

Chemistry (3 decks)

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