IIIIIIIV Ch. 7 – Ionic Compounds I. Ion Formation (p. 206 – 209)

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Presentation transcript:

IIIIIIIV Ch. 7 – Ionic Compounds I. Ion Formation (p. 206 – 209)

A. Vocabulary zChemical Bond yattractive force between atoms or ions that binds them together as a unit ybonds form in order to… xfulfill octet rule – atoms tend to gain, lose or share e - to acquire 8 valence e - xincrease stability

zCation yPositively charged ion formed when an atom loses one or more valence e - yNumber of protons stays the same, but less electrons gives + charge A. Vocabulary Loses an e-

zCations yMetals – lose valence e- easily yTransition 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

zAnions yNonmetals easily gain e - to form negative ions to get to 8 valence e - yName is changed to root + -ide A. Vocabulary Gains an e- Chloride ion

A. Vocabulary zAnions yNonmetals usually gain e - ySome can gain or lose, but will gain most often

A. Vocabulary ION Polyatomic Ion Monatomic Ion 1 atom 2 or more atoms NO 3 - Na +

IIIIIIIV Ch. 7 – Ionic Compounds II. Ionic Bonds and Ionic Compounds (p. 210 – 217)

A. Ionic Bonds zWhen oppositely charged ions attract, electrostatic force that holds them together = ionic bond zCompounds containing ionic bonds = ionic compounds zElectrons are transferred from cations to anions zBonds formed between metals and nonmetals (or contain a polyatomic ion)

RETURN A. Ionic Bonds

B. Ionic Compounds IONIC COMPOUND Tertiary Ionic Compound Binary Ionic Compound 2 elements more than 2 elements NaNO 3 NaCl

C. Properties of Ionic Compounds zPhysical structure yIons are packed into regular repeating pattern of ions = crystalline structure Ionic Bonding - Crystal Lattice

IONIC Bond Formation Type of Structure Solubility in Water Electrical Conductivity Other Properties Melting Point C. Properties Physical State