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Chemistry 30 > Unit 2-MS2 > Flashcards

Unit 2-MS2 Flashcards

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1
Q

What is a chemical bond?

A

-Result of attraction between nucleus and valence electrons of another atom

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2
Q

What type of bond is present between Fluorine (4.0) and chlorine (3.0)?

A

Polar covalent Bond

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3
Q

What is the type of bond between Oxygen (2.5) and Carbon (2.5)?

A

Pure covalent/Nonpolar Covalent

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4
Q

What is the hybridization of a water molecule?

A

sp3

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5
Q

Which bond is free to rotate and is the only bond present in single bonds?

A

Sigma Bond

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6
Q

Which bond is not free to rotate and consists of 2 lobes?

A

Pi Bond

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7
Q

What are some qualities of metallic bonds and what is the reason for them?

A
  • Good conductors:Electrons free to move throughout structure
  • Malleable/ductile:Bond structure same in all directions
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8
Q

What is Bond energy? How does it relate to melting points?

A
  • Energy required to break bonds of 1 mole of molecules

- Higher Bond energy often means higher melting point

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9
Q

What is lattice energy? How does it relate to melting points?

A
  • Energy released when 1 mole of ionic crystalline compound forms from gaseous ions
  • Negative means energy is released
  • The more negative it is, the higher the melting point
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10
Q

List all forces from weakest to strongest:

A

LDF, Dipole-Dipole, Hydrogen Bonding, Ionic, Metallic, Covalent

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11
Q

Which of the three intermolecular forces is the strongest?

A

Hydrogen Bonding

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12
Q

What is viscosity, surface tension, and Capillary action?

A

Viscosity:How much a fluid resists flowing
Surface tension:Property of liquids caused by attraction of particles which caused them to pull together leaving smallest possible surface area
Capillary Action: Attraction of surface of liquid to a solid’s surface

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13
Q

What are the 4 types of solid crystals?

A

Ionic crystals, Covalent network crystals, Covalent molecular crystals, and metallic crystals

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14
Q

What are properties of Ionic crystals?

A

Hard, Brittle, good insulators, high melting points, consist of positive and negative ions

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15
Q

What are properties of covalent network crystals?

A

Covalently bonded atoms, very hard, brittle, high melting points, nonconductors or semiconductors

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16
Q

What are the properties of covalent molecular crystals?

A

Molecules covalently bonded, low melting points, soft, good insulators

17
Q

What are the properties of metallic crystals?

A

Metal atoms bonded to a sea of electrons, good conductors, varied melting points

18
Q

What is the last point where a substance can exist as a liquid?

A

Critical point

19
Q

What is the point where a substance can exist as a liquid, gas, and solid at the same time?

A

Triple point

Chemistry 30 (3 decks)

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