Chapter 3
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What is an ionic bond?
transfer of electrons; creating charged ions (metals- nonmetals)
What is a covalent bond?
sharing of electrons; (nonmetal and nonmetal)
What formula is this: C6H12O6/6 = CH2O
Empirical formula
What does a pure substance consist of?
Elements and Compounds
What type of elements are there?
atomic and molecular
What type of compounds are there?
Molecular and ionic
Classify Xe
atomic element
Classify NiCl2
ionic compound
Classify NO2
molecular compound
Classify Br2
molecular element
How do you write an ionic compound formula?
• write the symbol for the metal cation and charge • write the symbol for the nonmetal anion and charge • charge without sign becomes subscript for other atoms • Reduce subscripts to smaller whole #’s • check that all charges sum to zero
Write the formula for ionic compound Al & O.
• Al 3+ • O 2- • Al2 O3 • Al2 O3 • Al2 O3
How to name a binary compound.
• Name the cation metal –> change in Roman Numeral • Base name anion nonmetal + suffix “ide”
Classify Fe2 O3
Iron (III) oxide
Classify FeO
Iron (II) oxide
Write the name of Ruthenium (IV) oxide
RuO4
ClO-
Hypochlorite
ClO2-
Chlorite
ClO3-
Chlorate
ClO4-
Perchlorate
MnO4-
Permanganate
SO32-
Sulfite
SO42-
Sulfate
HSO3-
Hydrogen sulfite