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Science Module 4 > Chemical Bonding > Flashcards

Chemical Bonding Flashcards

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1
Q

Outermost electrons

A

Valence electrons

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2
Q

attraction between atoms

A

chemical bonds

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3
Q

the theory that describes elementary aspects of chemical bonding

A

Lewis Theory

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4
Q

net transfer between atoms (connect electrostatically)

A

ionic bonds

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5
Q

shared electrons bond

A

covalent bonds

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6
Q

unequal sharing and large difference between electronegativity

A

polar bonds

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7
Q

symmetric arrangement of atoms and zero dipole movement

A

nonpolar bonds

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8
Q

all atoms are configured in eights

A

Octet rule

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9
Q

Exceptions to the Octet rule

A

Duet rule (He), incomplete octets (BF2), Odd-eletron species (NO), Expanded octets (PCl5)

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10
Q

What are odd electron species/ radicals?

A

involve atoms with unpaired valence electrons

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11
Q

What are expanded octets?

A

more than eight valence electrons

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12
Q

What do you use to represent the valence electrons of an atom?

A

Lewis Dot Symbols

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13
Q

What do you use to represent the valence electrons of a formula?

A

Lewis Structures

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14
Q

What are ionic compounds?

A

compounds made up of positive and negative ions held by an ionic bond

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15
Q

How do you write ionic formulas?

A

Criss cross method

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16
Q

What are molecular compounds?

A

Compounds made up of discrete molecules held by covalent bonds

17
Q

Polarity of a molecular compound is affected by what?

A

Electronegativity difference and molecular geometry

18
Q

Between molecular and empirical formulas, which is supposed to be in the smallest whole number ratio?

A

Empirical

19
Q

Can two compounds have the same empirical formula?

A

yes

20
Q

Ionic compounds are compounds between ____ and ____

A

metals and nonmetals

21
Q

compounds between two nonmetals are called?

A

Molecular compounds

22
Q

Indicators of an ionic compound

A

1) unmodified metal + nonmetal-ide
2) metal-our or -ic + nonmetal-ide
3) unmodified metal (roman numerals) + nonmetal-ide

23
Q

Indicators of molecular compound

A

prefixes

24
Q

What are ternary compounds?

A

composed of more than two elements

25
Q

What are oxoanions?

A

Composed of nonmetal and oxygen

26
Q

Indicators of Binary acids

A

prefix of hyrdro + -ic followed by acid

27
Q

What are ternary acids?

A

Composed of hydrogen and oxoanion, also called Oxoacids

Science Module 4 (4 decks)

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