Properties
Ionic & % Comp
Covalent & EF/MF
VSEPR & Polarity
Nomenclature
100
Identify each of the following as ionic, metallic, or covalent:
A - metallic
B - Ionic
C- Covalent
100
What is the chemical formula or ratio when Magnesium (Mg) bonds to Chlorine (Cl)?
ionic bond
MgCl₂ (1:2 ratio)
100
Identify the empirical and molecular formula for the compound shown below:
molecular: C₃H₆
empirical: CH₂
100
True or False: VSEPR shapes such as bent and trigonal pyramidal apply to ionic and covalent molecules.
Covalent
100
What is the chemical formula for diphosphorus trichloride?
P2Cl3
200
Ionic, Metallic, Covalent: which conducts electricity as a solution?
Ionic
They are the only electrolytes.
200
An unknown atom “X” bonds ionically with fluorine and makes the formula XF2. When it bonds with sulfur its formula is XS. What atom could unknown “X” be?
any atom with a +2 charge
200
Draw N2 AND identify the number of sigma and pi bonds.
1 sigma bond
2 pi bonds
200
Is this molecule polar?
nonpolar because it is symmetrical
200
What is the IUPAC name for P3Br5?
triphoshours pentabromide
300
Will shatter when hit with a hammer.
Ionic (brittle)
300
What is the percent composition of magnesium in Mg(OH)2?
41%
300
Will this molecule have the same molecular formula as it's empirical?
C3H8 cannot be reduced, so YES
300
What do lone pairs do the the bond angle between bonds? How do they affect the molecular shape?
Push the bonds together and make the bond angle smaller as a result of electron repulsion.
300
What is the IUPAC name for FeCl₂ ?
Iron (II) Chloride
400
Which substance should have the highest boiling point?
NaCl Fe CO2
NaCl - ionic have VERY high boiling points
400
Draw the lewis dot structure for ZnF2
400
Identify the central atom. How many bonded groups and lone pairs are on the central atom?
Nitrogen is central
2 bonded groups
1 lone pair
400
Draw PCl₃ and identify its molecular shape, number of bonded groups, and lone pairs.
Trigonal Pyramidal, 3 bonded groups, 1 lone pair.
400
What is the IUPAC name for Na2SO4?
Sodium Sulfate
500
Ionic, Metallic, Covalent: Which of the following will have a small difference in Electronegativity?
Covalent
Small difference prevents the stripping of an electron. This is why covalents share electrons not transfer.
500
Hydrogen makes up 11% of water. If I have 50g of H2O, what mass is oxygen?
Oxygen 89%
50(.89)= 45g
500
Identify the number of sigma and pi bonds on the molecule below:
3 sigma and 1 pi bond
500
Draw the molecule for CSe₂, identify its molecular shape, and state if it is a polar molecule or nonpolar.
linear and nonpolar
500
What is the IUPAC name for MnCrO₄?
Manganese (II) Chromate