TEXT: Wilbraham, Staley, Matta, & Waterman: PRENTICE HALL CHEMISTRY
| WEEKS | _ LECTURE AND LABORATORY TOPICS _ |
| | GRADE 7 - - INTRODUCTION TO CHEMISTRY |
| Week 1. | Definition of chemistry and of matter.
How chemists work.
(Chapter 1) LAB 7A. Safety rules and procedures. |
| Week 2. | Matter and change. Homogeneous and heterogeneous matter. Mixtures and pure substances (elements, compounds). Chemical formulas. (Chapter 2). QUIZ |
| Weeks 3-4. | Physical properties.
Phases of matter (solid/liquid/gas). Phase changes.
REVIEW.
QUIZ LAB 7B. Describing physical properties. |
| Week 5-6. | Chemical properties; chemical change; recognizing chemical changes. QUIZ LAB 7C. Evidence of chemical reactions: examples may include starch + iodine (color changes), acids and carbonates (bubbling), precipitation of BaSO4 or AgCl, etc. |
| Weeks 7-9. | Measurements and units in chemistry: length, mass, temperature, etc. Significant figures. Unit conversions. (Chapter 3) REVIEW. QUIZ LAB 7D. Measurements of length, mass, density. |
| Weeks 10-12. | Introduction to atoms. Atomic structure (protons, neutrons, electrons). Atomic numbers and weights. Isotopes. Redefinition of elements (only one type of atom) and compounds (several types). (Chapter 4) REVIEW. FULL-PERIOD TEST |
| Week 13-14. | Mendeleev and the Periodic Table. Periodic trends among elements. Predictions and confirmation. (Chapter 6) QUIZ |
| Week 15-16. |
Atomic structure. Electron configurations (geometric models).
Stable atoms and noble gases. (Chapter 5; Appendix A pp. R36-37) REVIEW. QUIZ |
| Week 17. | Positive and negative ions, with electron configurations resembling noble gases. |
| Weeks 18-20. | Ionic and metallic bonds.
Formulas and names of binary ionic compounds.
(Chapters 7, 9)
REVIEW.
QUIZ
LAB 7E. Separating mixtures (e.g., iron/sulfur; water/salt) |
| Week 21-22. | Nomenclature of acids and polyatomic ions. QUIZ |
| Week 23. | Atomic structure and electron configurations reviewed. (Chapter 5) REVIEW. FULL-PERIOD TEST |
| Weeks 24-25. | Lewis structures. Electronegativity. Covalent bonding. Simple covalent compounds and their names. Review of nomenclature rules. (Chapter 8) QUIZ LAB 7F. Properties of some binary compounds (in 2005, only NH3; in future years, also SO2 and H2S, which need hoods) |
| Week 26. | Systematic chemistry: halogens and their compounds. (Appendix A, R36-37) REVIEW. |
| Weeks 27-31. | Molecular weights and moles. Calculating molecular weights. Percentage composition, empirical formulas. (Chapter 10) REVIEW. QUIZ |
| Week 32. | Catch-up week and REVIEW.
FINAL EXAM |
| Weeks 33-34. | Review of exam.
Time available for field trip(s). |
NOTES ON LABORATORY EXERCISES:
Chemistry and Biology will have double periods scheduled once a week to permit two-period labs in each subject, as needed.