Ionic Compounds
Covalent Compounds
Naming
Molecular shape
Polarity
100
What are two properties of ionic compounds?
(2 of the following) They are brittle, conductive, solids at room temperature, soluble in water, have high melting and boiling points, and involve a metal bonded to a non-metal by electron transfer.
100
What are 2 properties of covalent compounds?
(2 of the following) They are non-conductive, are insoluble in water, low melting point, may be solid liquid or gas at room temperature, formed between two non-metals, electrons are shared.
100
Write the formula for: lead (IV) chromate (use the periodic table and your polyatomic ions list!)
Pb2(CrO4)4
100
What determines molecular shape and bond angles?
The number of electron domains, and the number or bonding and non-bonding electron pairs.
100
What kind of bond results from an unequal sharing of electrons?
A polar covalent bond
200
What is the octet rule? How is it used in bonding? (Why do atoms do this?)
Atoms lose, gain or share electrons to obtain a full valence shell (achieve an octet). They do this to obtain a noble gas configuration and become stable.
200
How many electrons are in a: single covalent bond double covalent bond triple covalent bond
2 electrons 4 electrons 6 electrons
200
write the formula for: Beryllium nitrate
Be(NO3)2
200
What is the molecular shape of PCl5?
Trigonal bipyramid
200
Is CF4 polar or non-polar?
Non-polar
300
What is a polyatomic ion? Give an example
It is an ion made of more than one atom. Carbonate CO3 2- Ammonium NH4+
300
What type of bond is C-C ? Ionic Polar Covalent Pure Covalent
Pure covalent. There is NO electronegativity difference between the C atoms. Electrons are shared equally.
300
What is the full name for the following compound: Ni(ClO2)2
nickel (II) chlorite
300
What is the molecular geometry of BF3?
Trigonal planar
300
Which is the most polar bond? N-H O-H Cl-H
O-H Look at electronegativity difference to determine polarity
400
What two parts make up an ionic compound? (be VERY specific)
A cation (a metal atom that loses electrons) and an anion (a non-metal atom that gains/steals electrons).
400
(You may use an electronegativity chart) Which bond is most polar? C-O C-Cl Si-O C-Br
Si-O Look at electronegativity difference to determine the polarity of a bond.
400
name the following compound K3N
potassium nitride
400
What is the molecular shape of CO3 2- ? (carbonate)
trigonal planar
400
What is the difference between a polar and a non-polar MOLECULE.
A nonpolar molecule has a symmetric distribution of charge (equal numbers of bonds, equal and opposite pull on electrons, no lone pairs) A polar molecule has a concentration of electrons on one side of the molecule (asymmetrical distribution of charge, unequal pull, one SIDE hogging the electrons, lone pairs etc)
500
Name the following ionic compounds: Cu(NO3)2 CaCl2 MnCr2O7
Copper (II) nitrate Calcium Chloride Manganese dichromate
500
Name the following covalent compounds: CO2 Cl7O2 CCl4 PI5
carbon dioxide heptachlorine dioxide carbon tetrachloride phosphorous pentaiodide
500
Name the following compound: NH4BrO3
Ammonium Bromate
500
What is the molecular shape of BrF3?
T-shape
500
Why is CF4 nonpolar even thou his contains polar bonds?
There is an equal distribution of charge. Drawing the lewis dot diagram you can see in the symmetry that the 4 Flourine's are pulling equally and oppositely, also there are no lone pairs and thus it is NONPOLAR.
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