1. Notes Tennessee SPI Objective: Identify the reactants and products of a chemical reaction. Science Essential Learning Students will identify reactants and products in chemical equations. Essential Question(s) How do I recognize reactants and products in chemical equations? SPI 0807.9.10 Reactants & Products Instructions 1) First click on "View" from the top-menu bar. 2) Then click on "Slide Show" from the drop-down menu. 3) Then use the right-arrow button on your keyboard to advance through this presentation.

2. Chemical Reactions  Are represented by chemical equations Chemical Equations  Have two parts: Notes Science SPI 0807.9.10 Reactants & Products 2H 2 + O 2 2H 2 O Example: (1) reactants and (2) products Reactants (Hydrogen & Oxygen) Product (water)  Reactants: are the "ingredients" of a chemical reaction. These are the things you are combining together… the things you start with.  Products: are the things that you produce in a chemical reaction… …the things you end up with.

3. Look at the chemical equation below. (from page 340)  Identify the reactants and products Notes Here are the reactants Here are the products Science SPI 0807.9.10 Reactants & Products

4. Reactants-are the starting materials in a chemical reaction Remember: the arrow ALWAYS points away from the reactants! Here are the reactants SPI 0807.9.10 Reactants & Products Notes Science Examine the reactants

5. Products- are the substances formed/produced in a chemical reaction Remember: the arrow ALWAYS points towards the products! Here are the products Notes Science SPI 0807.9.10 Reactants & Products Examine the products

6. 2H 2 + O 2 2H 2 O 2H 2 and O 2 Identify the REACTANTS in this equation. …or you could simply indentify the reactants as H (hydrogen) and O (oxygen) The arrow always points towards the product(s)! Reminder: Science SPI 0807.9.10 Reactants & Products Review

7. N 2 + 3H 2 2NH 3 SPI 0807.9.10 Reactants & Products Review 2NH 3 Identify the PRODUCTS in this equation. The arrow always points towards the product(s)! …or you could simply indentify the product as NH 3 (ammonia) Reminder: Science

8. 2NaCl 2Na + Cl 2 2Na and Cl 2 Identify the REACTANTS in this equation. The arrow always points towards the products! …or you could simply indentify the reactants as Na (sodium) and Cl (chlorine) Reminder: Science SPI 0807.9.10 Reactants & Products Review

9. Sn + 2H 2 O SnO 2 + 2H 2 Sn and 2H 2 O Identify the PRODUCTS in this equation. The arrow always points towards the products! …or you could simply indentify the products as Sn (tin) and H 2 O (water) Reminder: Science SPI 0807.9.10 Reactants & Products