1. Notes Tennessee SPI Objective: Identify the reactants and products of a chemical reaction. Science Check for Understanding Make a double-door foldable contrasting reactants and products. Essential Question(s) How do I recognize reactants and products in chemical equations? SPI 0807.9.10 Reactants & Products Instructions for Students 1) Make sure you view this presentation in slideshow mode. 2) You can find instructions about how to do this by doing a Google search or by searching YouTube. 3) After you have it in slideshow mode, press the right-arrow keyboard button to advance through the presentation. 4) If you need help, please communicate with your teacher.

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 chem reaction. These are the things you are combining… the things you start with.  Products: are the things that you produce in a chemical reaction… the things you end up with.

3. Examine the chemical equation below.  This example represents burning charcoal on a BBQ grill Here are the reactants Here are the products Burning Charcoal Reactants: Carbon & Oxygen Product: Carbon Dioxide Plus Sign Yields Sign Identify the reactants and products  Notice the chemical symbols and formulas and signs. Reactants: Carbon (C) & Oxygen (O) Product: Carbon Dioxide (CO 2 )

4. Reactants- 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- 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 Reactants 2H 2 and O 2 Identify the REACTANTS in this equation. …or you could simply identify 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 Identify the PRODUCT in this equation. The arrow always points towards the product(s)! …or you could simply identify the product as NH 3 (ammonia) Reminder: Science Product 2NH 3

8. 2NaCl 2Na + 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 Reactants 2Na and CL 2

9. Review Sn + 2H 2 O SnO 2 + 2H 2 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 Products Sn and 2H 2 O

10. Review Questions Science SPI 0807.9.10 Reactants & Products The arrow always points towards the product(s)!

11. Review Questions Science SPI 0807.9.10 Reactants & Products The arrow always points towards the product(s)! ReactantsProducts

12. Review Questions Science SPI 0807.9.10 Reactants & Products The arrow always points towards the product(s)!

13. Review Questions Science SPI 0807.9.10 Reactants & Products The arrow always points towards the product(s)! Reactants Product

14. Review Questions Science SPI 0807.9.10 Reactants & Products The arrow always points towards the product(s)!