, CHEM 120 Midterm Study Guide
AREAS COVERED
1. Designing an Experiment
2. Units and density
3. Isotopes
4. Identifying ionic and covalent molecules
5. Electron configuration
6. Lewis structures
7. Converting moles and grams
8. Stoichiometry Concentration (Molarity, m/v%)
9. Boyle, Charles, Avogadro and contributions to the Ideal Gas LawIdeal gas law
10. Acids/bases Buffers
11. Redox reactions
Designing an Experiment
• What makes a good hypothesis?
• Design experiments by changing only a single variable – why is this important?
• What are the differences between an independent, dependent and controlled variable?
Units and density
• Know metric units for mass, length, volume, time and temperature.