1. Drill 1. What symbol is used to separate two reactants or two products? 2. What symbol is used to separate reactants from products?

2. Objective The student will be able to: The student will be able to: Decode chemical equations in order to demonstrate balancing chemical reactions. Decode chemical equations in order to demonstrate balancing chemical reactions.

3. SAT/HSA Enrichment A strand of DNA has a nucleotide base sequence of TAC-CGG-AGT. Which of the following is the complementary mRNA nucleotide sequence produced from the strand of DNA? A strand of DNA has a nucleotide base sequence of TAC-CGG-AGT. Which of the following is the complementary mRNA nucleotide sequence produced from the strand of DNA? a. UAC-CGG-AGU b. ACU-GAA-CGA c. AGU-UCC-UAC d. AUG-GCC-UCA

4. Chemical Equations What makes them balanced?

5. Exploration Chemical Equations Chemical Equations Pre-assessment (mini lab) Pre-assessment (mini lab)

6. Exploration Class will discuss the lab answers. Class will discuss the lab answers. Class discuss-meaning of the symbols. Class discuss-meaning of the symbols. Key to deciphering chemical reactions worksheet. Key to deciphering chemical reactions worksheet.

7. Explanation Deciphering Chemical Reactions worksheet. Deciphering Chemical Reactions worksheet. Work with a partner to complete 5 out 9 of the problems. Work with a partner to complete 5 out 9 of the problems. Be ready to report your answers if called on. Be ready to report your answers if called on.

8. Explanation Balancing equations worksheet Balancing equations worksheet Working with a partner complete problems 1- 6. Working with a partner complete problems 1- 6. (notice patterns that can help you) (notice patterns that can help you) Working individually complete a-j; make sure to pick only 3! Working individually complete a-j; make sure to pick only 3!

9. Summary Did we accomplish the objective? Explain. Did we accomplish the objective? Explain. Why must all chemical equations be balanced? Why must all chemical equations be balanced? Why should the subscripts remain unchanged? Why should the subscripts remain unchanged? How does the Law of Conservation of matter related to chemical equations? How does the Law of Conservation of matter related to chemical equations? Identify two tips about balancing equations that you would give to a new chemistry student. Identify two tips about balancing equations that you would give to a new chemistry student.

10. Homework Balancing Chemical Equations worksheet. Balancing Chemical Equations worksheet. Read Types of chemical reactions lab. Read Types of chemical reactions lab.