Forming Chemical Bonds
Naming Ionic Compounds
Formula Mass and Mole Conversions
% Composition, Empirical and Molecular Formula
Naming Covalent Compounds and Acids
Lewis Structures and VSEPR Theory
Metallic Bonds and IMFs
100
What types of elements form ionic bonds? Covalent bonds?
Ionic bonds are formed between metals and nonmetals, covalent bonds are formed between nonmetals.
100
lithium bromide
LiBr
100
Formula mass of KClO3
122.5 amu
100
% composition of Al2O3
52.925% Al
47.075% O
100
NO2
nitrogen dioxide
100
Draw the Lewis Structure for CHCl3
100
Draw the atoms in a metallic bond.
200
Name 2 properties of ionic compounds and 2 properties of covalent compounds
Ionic: hard, brittle solids; high melting points; conducts electricity in water (electrolytes)
Covalent: low melting and boiling points
200
CrCl3
chromium (III) chloride
200
Molar mass of ammonium oxalate
124 g/mol
200
% composition of Fe(C2H3O2)2
32.107% Fe
27.621% C
3.477% H
36.794% O
200
diphosphorus pentoxide
P2O5
200
Draw the Lewis structure for CO2. Give its molecular geometry
linear
200
Give a definition of intermolecular forces.
Forces of attraction between molecules.
300
Write the chemical sentence to show the ionic bond formed from Magnesium + Oxygen
300
iron (IV) nitrate
Fe(NO3)4
300
The number of grams in 5.6 moles of BaCl2
1200 g BaCl2
300
Empirical formula of a compound containing 20.235% Al and 79.765% Cl
AlCl3
300
hydrochloric acid
HCl
300
Draw a structure with trigonal pyramidal geometry. How many bonds and lone pairs does it have?
3 bonds, 1 lone pair
300
What type(s) of intermolecular forces are found in propane?
London dispersion
400
Explain how covalent and ionic bonds form. Give at least 1 similarity and 1 difference.
Covalent bonds form when nonmetals share pairs of electrons. Ionic bonds form when a metal gives valence electrons to a nonmetal. Both happen so that all atoms have a full octet.
400
NiC2H3O2
nickel (I) acetate
400
The number of formula units in 125 g of silver nitrate.
4.43 x 1023 formula units AgNO3
400
Empirical formula of a compound that is 60.001% C, 4.476% H, and 35.523% O
C9H8O4
400
HNO3
nitric acid
400
What are the bond angles for:
Linear geometry?
Trigonal planar?
Tetrahedral?
Trigonal bipyramidal?
Octahedral?
Linear: 180o
Trigonal planar: 120o
Tetrahedral: 109.5o
Trigonal bipyramidal: 120o and 90o
Octahedral: 90o
400
Draw the Lewis structures for CH3OH and H2O. Draw the hydrogen bond between the two molecules.
500
Write the chemical sentence for the compound that forms from Scandium(III) + Fluorine
Assign oxidation numbers for each element in the compound.
500
manganese (VI) peroxide
Mn(O2)3
500
The number of oxygen atoms in 1.000 g sucrose (C12H22O11)
1.935 x 1022 atoms O
500
Empirical and molecular formulas of caffeine (49.48% C, 5.19% H, 16.48% O, 28.85% N)
Molar mass = 194.19 g/mol
Empirical: C4H5N2O
Molecular: C8H10N4O2
500
sulfuric acid
H2SO4
500
Draw all of the resonance structures of SO2. What is its molecular geometry?
bent
500
Rank the following from highest to lowest boiling point. Give a brief explanation.
CH4, C2H5OH, C2H6, C2H5Br
C2H5OH > C2H5Br > C2H6 > CH4
Boiling point decreases as IMFs get weaker.