I II III IV

Ch. 7 – Ionic Compounds

I. Ion Formation(p. 206 – 209)

A. Vocabulary

Chemical Bond

attractive force between atoms or ions that binds them together as a unit

bonds form in order to…fulfill octet rule – atoms tend to gain, lose or share e- to acquire 8 valence e-

increase stability

Cation Positively charged ion formed when an

atom loses one or more valence e-

Number of protons stays the same, but less electrons gives + charge

A. Vocabulary

Loses an e-

Cations Metals – lose valence e- easily Transition metals – have 2 valence e-,

usually lose those two to form 2+ ions, but can also lose d electrons to form other ions

A. Vocabulary

Anions Nonmetals easily gain e- to form negative

ions to get to 8 valence e-

Name is changed to root + -ide

A. Vocabulary

Gains an e-

Chloride ion

A. Vocabulary

Anions Nonmetals usually gain e- Some can gain or lose, but will gain most

often

A. Vocabulary

ION

PolyatomicIon

MonatomicIon

1 atom 2 or more atoms

NONO33--NaNa++

I II III IV

Ch. 7 – Ionic Compounds

II. Ionic Bonds and Ionic Compounds(p. 210 – 217)

A. Ionic Bonds

When oppositely charged ions attract, electrostatic force that holds them together = ionic bond

Compounds containing ionic bonds = ionic compounds

Electrons are transferred from cations to anions

Bonds formed between metals and nonmetals (or contain a polyatomic ion)

RETURN

A. Ionic Bonds

B. Ionic Compounds

IONIC COMPOUND

Tertiary IonicCompound

Binary IonicCompound

2 elementsmore than 2

elements

NaNONaNO33NaClNaCl

C. Properties of Ionic Compounds

Physical structure Ions are packed into regular repeating

pattern of ions = crystalline structure

Ionic Bonding -

Crystal Lattice

IONICBond FormationType of Structure

Solubility in Water

Electrical ConductivityOtherProperties

MeltingPoint

C. Properties

Physical State