Chemical Bonds Chapter 6 Flashcards

0
Q

define octet rule

A

elements obtain full valence shells (8) to obtain maximum stability

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1
Q

what is a chemical bond?

A

when atoms link together to form bonds

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2
Q

what elements does the octet rule not apply to?

A

first four or five elements in the periodic table

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3
Q

chemical bond is results in a change in what

A

energy

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4
Q

define covalent bonds

A

bonds formed by sharing electrons, this happens between nonmetals

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5
Q

what is an example of a covalent bond

A

H2O

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6
Q

define ionic bond

A

it involves a metal bonding to a nonmetal. it is an attraction of opposite charges

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7
Q

give an example of an ionic bond

A

NaF sodium flouride

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8
Q

what property affects covalent and ionic bonds?

A

polarity

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9
Q

define polarity

A

the tendency of an object to form 2 localized regions of opposite character

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10
Q

what determines bond polarity

A

electronegativity

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11
Q

what bond is formed between cesium and sulfur

A

ionic bond

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12
Q

what bond is formed between chlorine and bromine

A

covalent bond

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13
Q

what bond is formed between magnesium and fluorine

A

ionic bond

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14
Q

what bond is formed between silver and magnesium

A

metallic bond

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15
Q

what forces hold covalently bonded atoms together?

A

electrostatic forces

16
Q

why are covalent compounds usually gasses liquids or solids with low melting points

A

they have weak intermolecular forces

17
Q

how does the structure of ionic compounds affect their ability to conduct electricity?

A

in its solid state, they are tightly packed and conduct no electricity, when they dissolve they conduct electricity

18
Q

why is distilled water instead of tap water used in experiment?

A

because it doesn’t contain extra things in it that would contaminate the experiment