General Trend
Electronegativity
All About Bonds
Polar Bears and Penguins
Grab Bag
100
According to the chart provided, what corner has the lowest electronegativity?
What is the lower left?
100
This happens to the atom's ability to hold electrons as the distance between the electrons and the nucleus increases.
What is becomes weaker?
100
This type of bond shares electrons equally.
What is Non-polar?
100
What are the three types of bonds?
Nonpolar covalent
Polar covalent
Ionic
100
Electronegativity has to do with what part of the atom?
What is an electron?
200
Electronegativity does this as it goes down the group.
What is decreases?
200
This element has a higher electronegativity: Sb or O?
What is O?
200
This type of bond transfers one or more electrons from a metal onto a non-metal.
What is Ionic?
200
Does HF have any dipoles? Why or why not?
Yes, HF is polar due to the electronegativity of the bond.
200
A higher or lower electronegativity causes an atom to have a greater share of electrons.
What is higher?
300
This happens to the electronegativity as you go from left to right across a period.
What is increases?
300
This type of bond has an unequal sharing of electrons.
What is Polar?
300
Does N2 have any dipoles? why or why not?
No, it is not polar
300
Explain why water has a tendency to create beads on surfaces.
Water is polar, thus has partial charges
These partial charges attract each other
Water beads up because the molecules are more attracted to each other than the surroundings.
400
According to the graph provided, this element has the highest electronegativity.
What is Fluorine?
400
Electronegativity is the ability to do this when bonded to another atom.
What is attract electron towards itself?
400
A covalent bond is when ___ __________ share electrons.
What is two non-metals?
400
Explain what chemistry this image is portraying
The image is showing a polar bond between hydrogen and chlorine. The ice cream scoops are electrons and the size of the animals is the electronegativity value. As one animal is larger (has more electronegativity) the ice cream (electrons) spend more time on the larger animal side.
400
An unknown liquid is shown to dissolve in water, bead up when placed on wax paper, and has a minty sent. This liquid is polar, non-polar, or ionic.
What is polar?
500
This element has a higher electronegativity: N or Si
What is N?
500
C vs. Te
(Which element has a higher electronegativity?)
What is C?
500
NaCl: The type of bond and the estimated change in Electronegativity.
What is Ionic and 2.1?
500
Explain how CO2 can have polar bonds (dipoles) but not be a polar molecule (dipole)
CO2 has two equal polar bonds pulling in opposite directions, balancing them out and making the entire molecule non-polar
500
Draw a Lewis dot structure of HF and include the following
1. the partial charges
2. the type of bond
Polar bond (1.9)