3 Names of Some Common Ions Copyright 2005 by Pearson
Education, Inc. Publishing as Benjamin Cummings
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
9
Slide 10
Criss-Cross Rule
Slide 11
Try These Ca & Cl S & Al Na & H Ca 2+ O 2- CaCl 2
Al 2 S 3 NaH CaO Remember, the location of numbers is VERY
important The subscript (lower) is the number of atoms The
superscript (upper) is the charge on the ion If they are in the
wrong place and not reduced they are WRONG no part marks
Slide 12
Slide 13
See pages 189 - 191 Example 1: Sometimes when iron combines
with oxygen forms a black compound Iron II oxide (FeO = Iron II
oxide) Example 2: Sometimes when iron combines with oxygen forms a
rust-coloured compound Iron III oxide (Fe 2 O 3 = Iron III
oxide)
Slide 14
Example 1) Gold (I) chloride Au +1 Cl -1 AuCl 2) Lead (IV)
oxide Pb +4 O -2 PbO 2
Slide 15
Slide 16
Slide 17
Slide 18
Slide 19
Slide 20
Na(CO 3 ) Ca(OH) Na 2 (CO 3 ) Ca(OH) 2 Example: Compound formed
with Na and CO 3 would be Example: Compound formed between Ca and
OH would be
Slide 21
Predict the compound formed from: Na + and OH - Mg 2+ and NO 3
- NH 4 + and SO 4 2- Na(OH) Mg(NO 3 ) 2 (NH 4 ) 2 SO 4
Slide 22
Slide 23
Predict the compound name: Ca(CO 3 ) K(CN) Ca 3 (PO 4 ) 2 (NH 4
)F Calcium carbonate Potassium cyanide Calcium phosphate Ammonium
Fluoride
Slide 24
Iron (II) hydroxide
Slide 25
Types of Chemical Reactions Exothermic energy is released from
the reaction Example: Atomic blast Memory Tip: Exo starts with the
letters ex similar to exit
Slide 26
Types of Chemical Reactions Endothermic energy is absorbed in
order for the reaction to occur Example: cooking eggs Memory Tip:
Endo starts with the letters en similar to enter