Daily Science Name the following compounds that contain a TRANSITION METAL: Zn 2 O 3 ZrF 2 CuN.
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Transcript of Daily Science Name the following compounds that contain a TRANSITION METAL: Zn 2 O 3 ZrF 2 CuN.
Daily Science
Name the following compounds that contain a TRANSITION METAL: Zn2O3
ZrF2
CuN
PG. 53
Metallic and Covalent Bonds
Metallic Bonds
Between a metal and a metalOuter energy levels form a ‘sea of electrons’High melting and boiling pointsGood conductorsCan make alloys (mixture of elements that
have metallic properties)Ex. Brass and bronze
Covalent Bonds
Non-metal and non-metalValence electrons are sharedForm molecules (2 or more atoms covalently
bonded)Use Lewis Structures to show covalent bonds
Lewis Structures and Covalent Bonding
The shared electrons are called bonding pairsUnshared electrons are called lone pairsSingle bonds in a Lewis structure are called
sigma bonds (σ)Double and triple bonds are called pi bonds
(π)When bonds are broken they either release
energy or take in energy Exothermic- energy is released (feel heat) Endothermic- Energy is absorbed ( feels cold)
Naming Covalent Bonds
Name the first element first using the whole name If there is only one of the element name is regularly If there is more than one of the element use a prefix
The second element ALWAYS gets a prefix and the ending drops and you add –ide
Neither one is capitalized
Number of atoms Prefix
1 mono-
2 di-
3 tri-
4 tetra-
5 penta-
6 hexa-
7 hepta-
8 octa-
9 nona-
10 deca-
Examples
CCl4
As2O3
COSO2
NF3
Naming Acids
Always has a Hydrogen attached to it and is always dissolved in water
Naming binary acids: Only 2 elements Has a hydrogen atom Hydro- element or polyatomic ion- ic acid
Naming oxyacids: A polyatomic ion that contains an oxygen If the ion ends in –ate change it to –ic If the ion ends in –ite change it to –ous
Examples
HBrHCN
HNO3
HNO2