A Chemistry Scope and Sequence can be found here (for my state, Virginia)http://www.chem.vt.edu/chem-dept/mcl/pdf_files/chemss.pdf
I have been studying chemistry all summer to teach my 15-year old. We are actually going to spend more than a year studying it and also do numerous labs.
A couple of things I found helpful are:
1. Our library carries a series of 12 books titled Chemlab (Grolier Educational). The books have incredible photos and detailed descriptions of labs which could at least drive the points of the lab home without actually using the lab equipment. Check your library to see if they carry these. When studying acids and bases, you could use the book "Acids, Bases and Salts" for example. If I could not afford to do the labs, I would go this route.
2. If you really do not feel comfortable, I think you could benefit from The Teaching Company videos "High School Chemistry" done by Frank Cardulla. You could even show it to your students.http://www.teach12.com/store/course.asp?id=111&d=High+School+Level%26%238212%3BChemistry
In this course, nationally recognized teacher Frank Cardulla teaches that "chemical" reasoning is nothing more than an extension of the kind of quantitative reasoning that most of us use every day.
Once this base is firmly established, this simple, natural reasoning is then applied to most of the important problem-solving situations that face high school chemistry students, from density, to the mole, to molarity, stoichiometry, and equilibrium.
Mr. Cardulla does not teach "gimmicks" to obtain correct answers to simple problems without any real understanding, only to have them fall apart later when you encounter problems that demand understanding.
Instead, he establishes a firm foundation based on a real and deep understanding of basic concepts.
On sale right now at $79.95 for DVDs and $59.95 for videos. Normally they sell for $200 and more. This is a great company and all of their products go on sale at least once a year. A workbook accompanies this. It helps a lot with the calculations side of chemistry.
Course Lecture Titles
1. Introduction and Philosophy
2. Quantitative Reasoning in Life and Chemistry (Part I)
3. Quantitative Reasoning in Life and Chemistry (Part II)
5. The SI (Metric) System of Measurement
6. Converting between Systems of Measurement
7. The Mole Concept: Preliminary Ideas
8. The Mole
9. Solving Mole Problems
10. Avogadro's Hypothesis and Molar Volume
11. Percent Composition and Empirical Formulas
12. Solving Empirical Formula Problems
13. Writing and Balancing Chemical Equations
14. An Introduction to Stoichiometry
15. Stoichiometry Problems
16. Advanced Stoichiometry
17. An Introduction to Molarity
18. Solving Molarity Problems
19. Additional Molarity Problems
20. Basic Concepts of Chemical Equilibrium (Part I)
21. Basic Concepts of Equilibrium (Part II)
22. Interpreting an Equilibrium Constant
23. Le Chatelier's Principle (Part I)
24. Le Chatelier's Principle (Part II)
25. An Introduction to Equilibrium Problems
26. The Self-Ionization of Water
27. Strong Acids and Bases (Part I)
28. Strong Acids and Bases (Part II)
29. Weak Acids and Bases
3. On the topic of labs. Standard equipment and chemicals can be pricey (I'm looking at $350), but there are many less expensive ways to at least show the same principles with more every day items. While this is not the same sort of preparation that many chemistry students are receiving for college level courses, it's still better than nothing.
Look into the following books at your library:http://www.amazon.com/exec/obidos/search-handle-form/002-0588254-9784852
These are all of the books in the series. You would focus on ones more directly associated with the topics you are covering in chemistry. I really like these books because he does a great job of actually explaining the labs.
4. Finally, I have found the following two websites to be of enormous help:http://www.chemistrycoach.com/http://www.cavalcadepublishing.com/