Chemistry chapter 8 - Curiel
When naming molecules, what suffix is usted for the second element
-ide
Prefixes of molecules
1 = mono 2= di 3= tri 4= tetra 5= penta 6= hexa 7= hepta 8= octa 9= nona 10= deca
Lewis Structure: How many electrons represented for CCI4
32
How many electrons are there in a triple bond
6
When drawing Lewis structure for HCl, how many valence e- must be accounted for?
8
diatomic molecule
A molecule consisting of two atoms H2, N2, O2, F2, CL2, BR2, I2
Classify the following compounds as ionic or covalent: a) MgCl2 b) Na2S c) H2O d) H2S
A. Ionic B. Ionic C. Covalent D. Covalent
How is an electron dot structure used to represent a covalent bond?
An electron dot structure shows the shared electrons of a covalent bond by a pair of dots.
Describe the difference between an ionic and covalent bond.
An ionic bond is formed between a metal and a non-metal. Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the "sharing" of pairs of electrons between atoms.
Describes a polar molecule?
Areas of different charge
An example of a p and p orbital overlap
C — C
A pi bond looks like a ...
Donut
What has the greatest bond length
Double bond
How many lone pairs are present in a water molecule
Four
Example of a s and s orbital overlap
H — H
What electron configurations do atoms usually achieve by sharing electrons to form covalent bonds?
In covalent bonds, electron sharing usually occurs so that atoms attain the electron configurations of noble gases.
Concerning covalent compounds such as propane (C3H8), do they generally have high or low boiling points?
Low
Identify the type of atom that generally forms covalent bonds.
Most covalent bonds form between nonmetallic elements.
Which molecule has a triple bond?
N2
Describe how the molecule N2O is different from the molecule whose formula is NO.
NO has one nitrogen and one oxygen N2O has 2 nitrogen and one oxygen
Explain why neon is monatomic but chlorine is diatomic.
Neon has an octet of electrons. A chlorine atom achieves an octet by sharing an electron with another chlorine atom.
What are the only elements that exist in nature as uncombined atoms? Why?
Noble gases because they already have a full set of electrons (monatomic)
What type of elements make up molecules
Non-metals
How many double bonds in a water molecule?
None
How many lone pairs on a HCl molecule
One
The covalent bond capability of hydrogen
One
Please describe the nature of a polar molecule.
Polar molecules occur when two atoms do not share electrons equally in a covalent bond. A dipole forms, with part of the molecule carrying a slight positive charge and the other part carrying a slight negative charge.
Formula for sulfur hexafluoride
SF6
A sigma bond looks like a...
Sandwich
Name SeO2
Selenium dioxide
Another term for boding pair
Shared pair
In a polar molecule, a shared pair of electrons are
Shared unevenly
Which best describes the space formed with a triple bond?
Sigma & pi & pi
How many electrons are shared between a single bond? Double bond? Triple bond?
Single - 2 Double- 4 Triple-6
How many valence electrons does sulfure have?
Six
How many covalent bonds in a N2 molecule?
Three
How many multi-bonds is nitrogen capable of?
Three
How many double bonds found in a CO2 molecule?
Two
Do compounds that are connected by covalent bonds have strong or weak intermolecular forces?
Weak
molecular compound
a compound that is composed of molecules Weak intermolecular forces
When are two atoms likely to form a double bond between them? A triple bond?
by sharing two or three pairs of electrons
Name CO
carbon monoxide
CCI4
carbon tetrachloride
How many valence electrons does carbon have?
four
PH3
phosphorus trihydride
