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Flashcards in Chapter 3 Deck (27):
1

Chemical bond

is the force of attraction between any two atoms in a compound

2

Lewis symbol

uses atomic symbol to represent the nucleus and core electrons and dots to represent valence electrons

3

Ionic Bonding

involves a transfer of one or more electrons from one atom to another.

4

Covalent bonding

involves a sharing of electrons

5

Ionic Bond

is the electrostatic force, the attraction of opposite charges resulting cation and anion

6

Crystal Lattice

Positive and negative ions arrange themselves in a regular three-dimensional repeating array to produce a stable arrangement

7

Covalent compounds consists of?

compounds containing only covalent bonds

8

Molecules

are neutral (uncharged) species made up of two or more atoms joined by covalent bonds

9

List the most obvious examples of diatomic molecules?

H2, N2, O2, F2, Cl2, Br2, I2

10

Polar Covalent Bond

diatomic molecule composed of two different elements, not sharing electrons equally

11

Electronegativity

measure of the ability of an atom to attract electrons in a chemical bond

12

Monatomic Ions

ions consisting of a single atom

13

Polyatomic ions

an example: OH- hydroxide ion, are composed of two or more atoms bonded together. These ions, although bonded to other ions with ionic bonds, are themselves held together by covalent bonds.

14

Melting point

temperature at which a solid is converted to a liquid

15

boiling point

is the temperature at which a liquid is covered to a gas a specified pressure

16

Ionic solids are?

crystalline, characterized by a regular structure

17

covalent solids are?

crystalline or have no regular structure (amorphous)

18

Dissociation

an ionic solid, if soluble, will form positive and negative ions in solution

19

triple bond

three pairs of electrons are shared by two atoms

20

bond energy

amount of energy in units of kilocalories

21

isomers

compounds that share the same molecular formula but have different structures

22

resonance

when a compound has 2 or more lewis structures that contribute to the real structure

23

monatomic ions

ions consisting of a single charge

24

polyatomic ions

ions composed of 2 or more atoms bonded together with an overall positive or negative charge

25

Electrolytes

ions present in solution allowing the solution to conduct electricity

26

covalent solids usually do not do what?

dissociate and do not conduct electricity

27

Order of melting point increasing

Non-polar, polar covalent, ionic