Chapter 4 - Structure and Properties of Substances

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Ionic bonding

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Chemistry

20 Terms

1

Ionic bonding

________ occurs with atoms of elements of large differences in electronegativity.

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2

Water pack

________ in a specific way where the solid- state is less dense than the liquid state.

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3

Dispersion

________ (London) force: the force of attraction between nonpolar molecules larger number of electrons cause an uneven distribution of charge large shape of the molecule are stronger and results in increased boiling point**

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4

Lewis

________ structures: atomic symbol in the middle with its outer valence electrons around.

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5

molecular forms

Allotropes:** different crystalline or ________ of the same element that differ in physical and chemical properties.

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6

Positive ion

________ attracts with the negative end of the water.

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7

soft solids

Can be ________, liquids, or gas at room temperature.

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8

Dipole dipole

________ forces**: attractions between opposite charges.

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9

polyatomic ion

Intramolecular forces**: forces exerted within a molecule or ________.

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10

polar molecule

Ion- dipole forces**: the force of attraction between ion and ________.

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11

lone pairs

Resonance structure**: models that give the same relative position of atoms but show different places for their bonding and ________.

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12

Dipole

________:** charge separation for the entire molecule.

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13

electron model

Free- ________**: pictures metals as being composed of densely packed core of metallic cations with free roaming electrons.

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14

Chemical bonds

________: electrostatic forces that hold atoms together in compounds lower- energy systems tend to have* greater stability than higher- energy systems* Bonded atoms are more stable**

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15

Covalent bonding

________: electron- sharing to acquire noble gas configuration.

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16

physical properties of substances

Intermolecular forces**: forces that influence ________; forces of attraction and repulsion that act between molecules.

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17

pool of valence

Metabolic bonding**: force of attraction between positively charged cations and the ________ electrons that moves among them.

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18

nonpolar molecule

Ion- induced dipole forces**: ion in close proximity to a(n) ________ that distorts electron density of non- polar molecule making it polarized.

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19

Coordinate covalent bond

________**: when a filled atomic orbital overlaps with an empty atomic orbital.

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20

Crystalline solids

________**: organized particle arrangements of solids.

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