Drill 1 2 What symbol is used to

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

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

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

Chemical Equations What makes them balanced?

Exploration l Chemical Equations l Pre-assessment (mini lab)

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

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

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

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

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