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Honors Chemistry II > Unit 1 > Flashcards

Unit 1 Flashcards

1
Q

What is an ionic bond

A
  • A chemical bond formed by electrostatic attraction between positive and negative ions
  • Transferring of electrons
  • 7 Types
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2
Q

What is a covalent bond

A

Sharing of electrons

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3
Q

Define electronegativity

A

A measure of the ability of an atom in a molecule to draw bonding electrons to itself

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4
Q

Draw the electronegativity line

A

Nonpolar Partial charge Full charge
No meaningful Polar
charge

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5
Q

What does isoelectric mean

A

The same

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6
Q

What are the two exceptions to the octet rule

A
  • Hydrogen- no p orbital-> 2 electrons filled-> duet rule

- Boron-> 6 electrons filled

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7
Q

What is a polar covalent bond

A

One in which the bonding electrons spends more time near one Atom

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8
Q

What is the formal charge formula

A

FCcentral.atom=#of valence electrons-(#of bonding electrons/2)- #of lone pair electrons

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9
Q

What is resonance

A

Delocalized bonding

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10
Q

What is the bond angle for linear geometry

A

180

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11
Q

What is the bond angle for Trigonal planar geometry

A

120

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12
Q

What is the bond angle for tetrahedral geometry

A

109.5

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13
Q

What is the bond angle for trigonal bypyramidal geometry

A

90 and 120

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14
Q

What is the bond angle for octahedral geometry

A

90

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15
Q

The energy required to break a chemical bond is called what

A

Bond energy

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16
Q

Types of Bonds- location in 3D space

A

1- single- lowercase sigma- orbitals overlap head to head along bond axis
2- double- pi- orbitals overlap side to side above and below bond axis

17
Q

the number of electrons lost or gained by an Atom is determined by its need to be isoelectronic with a noble gas… Why?

A

It needs to achieve Psuedo

18
Q

What is the goal of bonding

A

To fill the outer shell or to fill orbitals

19
Q

What type of property is electronegativity

A

Physical

20
Q

What explains why Atoms share

A

Electronegativity

21
Q

Nonpolar bonds contain what special type of group of atoms

A

Diatoms

22
Q

Metals are isoelectric with the noble gas in the _____ Period

A

Preceding

23
Q

What types of charges do ionic bonds have

A

Full

24
Q

How many degrees do you lose when you add a loan pair

A

2.5

25
Q

Why don’t solids conduct electricity

A

Because they have nothing to bond with. It isn’t dissolved with any other substance.

26
Q

Why is water a bad conductor of electricity

A

Once it becomes pure, its impurities are gone. Ions can not transfer now because of the lack of ions

27
Q

Why don’t some of the liquids conduct electricity

A

The polarity is below 1.8

Honors Chemistry II (5 decks)

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