I&C Bonds
I&M Solids
Nomenclature
Structures & Shapes
All Things Polar
100
What holds ionic bonds together?
The charge of the cation and the anion (opposite charges attract)
100
A(n) ____________ compound typically conducts electricity when dissolved in water.
Ionic Compound.
100
Formula for: magnesium perchlorate
Mg(ClO4)2
100
Draw the bonding structure for CO2
100
True or False: nonpolar molecules dissolve in water
False
"Like dissolves like"
200
What holds a covalent bond together?
The shared electrons
200
Which conducts electricity better, NaCl or HCl?
Why?
NaCl - free-to-move charges
200
Name for: Re(AsO3)2
Rhenium (VI) arsenite
200
Draw the bonding structure for MgCl2
200
True or False: a polar molecule must be asymmetric
True
300
Explain the concept of polarity
Electrons spend more time with one atom than another
300
_______________ compounds can be soluble or non-soluble in water.
Molecular
300
Name and bond polarity for: P2S3
diphosphorus trisulfide
bond: non-polar
300
Draw the bonding structure for H2O. Determine the bond polarity and the molecular polarity.
Bond polarity = polar
Molecular polarity = polar
300
Calculate the △EN and determine the type of bond for nitrogen monoxide
△EN = 0.4 ∴ this is a non-polar bond
400
What is electronegativity used to determine?
the extent of electron sharing in a bond
400
Explain why ionic solids dissolve in water
ion-dipole forces
Water is a polar substance. The cation of the ionic solid is attracted to the negative end of the water and the anion is attracted to the positive end of water.
400
Name for: H2CrO4
chromic acid
400
First determine the
triangleEN ,
then draw the appropriate bonding structure for AlCl3
triangle EN = 1.55
therefore, polar covalent
400
Determine the bond polarity of : CH3Br
Determine the molecular polarity of the molecule
Bond: non-polar (C-H) and polar (C-Br)
Molecule: polar (asymmetrical)
500
What previously held understanding about ionic and molecular compounds, have been proven incorrect based on our understanding of electronegativities?
Previous knowledge - metal + non-metal = ionic, non-metals = covalent
New knowledge = difference of EN has to be greater than 1.7 in order for an ionic compound to be formed
500
Which compound will have the higher boiling point, MgO or H2O? Why.
MgO - strong bonds between ionic solids
500
Formula for: hypochlorous acid
*Fun fact! This is a substance that our bodies naturally produce within our white blood cells, it works to kill bacteria and irritants that are harmful to us!
HClO (aq)
500
Determine the type of bond, then draw the bonding structure for PCl3
Bond = polar covalent
500
Determine the bond polarity of CCl4
Determine the molecule polarity
Bond: polar
Molecule: non-polar