Online Extra Credit Problems

1. Significant Figures
2. Scientific Notation
3. Predicting Exponents
4. Direct and Inverse Relationships
5. Direct/Inverse Problems
6. General 3 Variable #1
7. General 3 Variable #2
8. General 3 Variable #3
9. Percentages
10. Mass, Density and Volume
11. Converting Volume
12. Converting Mass
13. Converting Distance
14. Converting Density
15. Converting Temperature
16. Metric Conversions
17. More Metric Conversions

Chapter 2 Part 1: Atoms, Molecules and Ions

1. Protons, Electrons and Neutrons

Chapter 2 Part 2: Atoms, Molecules and Ions

1. Simple Nomenclature - Formulas to Names
2. Simple Nomenclature - Names to Formulas
3. Transition Metal Nomenclature
4. Elements, Moles and Mass
5. Calculating the Molar Mass of a Compound
6. Mass, Moles and gfw
7. Word Problems - Elements and Moles
8. Chemical Formulas and Mass Relationships
9. Calculations based on Chemical Formulas
10. Using Molar Volume
11. Density, Elements, Mass and Moles
12. Mass, Moles, Density and Volume
13. Exercises in Comparison
14. Further Exercises in Comparison
15. Additional Exercises in Comparison
16. Percent Composition
17. Empirical Formulas From Percent Composition

1. Balancing Chemical Reactions
2. Basic Stoichiometry - Grams to Moles
3. Basic Stoichiometry - Moles to Moles
4. Basic Stoichiometry - Grams to Grams
5. Limiting Reagents
6. Using Limiting Reagents
7. Calculations Based on Percent Yields
8. Combining Limiting Reagent and % Yield
9. Combustion Analysis

Chapter 4: Aqueous Reactions and Solution Stoichiometry

1. Molarity, Moles and Volume
2. Molarity, Mass and Volume

Chapter 5: Thermochemistry

1. Heat and Temperature Changes for Water
2. Heat Transfer - Water
3. Heat Transfer - Two Samples of Water
4. Heat Transfer - Water and Another Substance
5. Hess's Law
6. Thermochemical Equations

Chapter 6: Electronic Structure of Atoms

1. Wavelength, Frequency and Energy
2. Atomic Spectrum of Hydrogen
3. The de Broglie Wave Equation

Chapter 7: Periodic Properties of the Elements

1. Electronic Structures of Atoms and Ions
2. The Quantum Numbers