Chemistry Ch. 7 Study Guide- Ionic Compounds and Metals

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Chemical bond

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Chemistry

26 Terms

1

Chemical bond

the force that holds two atoms together

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2

Ionization energy

the energy required to remove an electron

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3

Cation

positively charged ions

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4

Anion

negatively charged ions

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5

Ionic bond

electrostatic force that holds oppositely charged particles together in a ionic compound

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6

Ionic compound

compound that contains ionic bond(s)

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7

Binary ionic compound

have 2 different elements

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8

Electrolyte

ionic compound whose aqueous (dissolved in water) solution conducts an electric current

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9

Lattice energy

the energy required to separate 1 mole of the ions of an ionic compound

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10

Formula unit

base formula for the ratio of cation to anion

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11

Monoatomic ion

a one-atom ion

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12

Oxidation number

the charge of the monoatomic ion

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13

Polyatomic ion

Ion made of more than 1 atom

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14

Oxyanion

an anion with oxygen in it (has to be polyatomic)

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15

Electron sea model

the metal atoms in a metallic solid contribute their valence electrons to form a "sea" of electrons that surround the metal cations

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16

Delocalized electrons

in the outer energy levels of the bonded metal atoms and are not held by a specific atom but move freely between atoms

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17

Metallic bond

the attractions between the metallic cation and delocalized electrons

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18

Alloy

mixture of elements that has metallic properties

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19

Substitutional alloy

metal alloys formed by substituting one metal atom for another metal atom of similar size

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20

Interstitial alloy

holes (interstices) in a metallic crystal are filled with smaller atoms

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21

Cations are...

metals

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22

Anions are...

non-metals

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23

Ionic compounds in solid form...

do not conduct electricity

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24

Ionic compounds in liquid form or in solution...

do conduct electricity

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25

Two types of of ionic compounds

salts and oxides

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26

Properties of ionic compounds

hard, rigid, brittle

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