1. Tennessee SPI Objective: Essential Question(s)
Reactants & Products
Notes
Science
Tennessee SPI Objective:
Identify the reactants and products of a chemical reaction.
Essential Question(s)
How do I recognize reactants and products in chemical
equations?
I Can Statement
I can identify reactants and products in a chemical equation.
Success Criteria
I can prove that I understand this topic by showing you the
reactants and products in a chemical equation.

2. 2H2 + O2 2H2O Notes Science Example: SPI 0807.9.10
Reactants & Products
Notes
Science
Chemical Reactions
Are represented by chemical equations
Chemical Equations
Have two parts:
(1) reactants and (2) products
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.
Reactants
(Hydrogen & Oxygen)
Product
(water)
2H2 + O H2O
Example:

3. Identify the reactants and products
Examine the chemical equation below.
This example represents burning charcoal on a BBQ grill
Notice the chemical symbols, chemical formulas, and signs.
Identify the reactants and products
Reactants: Carbon (C) & Oxygen (O)
Product: Carbon Dioxide (CO2)
Here are the reactants
Here are the products
Plus Sign
Yields Sign
Burning Charcoal
Reactants: Carbon & Oxygen
Product: Carbon Dioxide

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

5. Memory Trick Notes Science Examine the products SPI 0807.9.10
Reactants & Products
Notes
Science
Examine the products
Products- substances formed/produced in a chemical reaction
Remember: the arrow ALWAYS points towards the products!
Memory Trick
Letter “P” for points goes with letter “P” for products.
The arrow always points
to the products!
Here are the products

6. Identify the REACTANTS in this equation.
SPI
Reactants & Products
Review
Science
2H2 + O H2O
Identify the REACTANTS in this equation.
Reminder:
The arrow always points towards the product(s)!
Reactants
2H2 and O2
…or you could simply identify the reactants as
H (hydrogen) and O (oxygen)

7. Identify the PRODUCT in this equation.
SPI
Reactants & Products
Review
Science
N2 + 3H NH3
Identify the PRODUCT in this equation.
Reminder:
The arrow always points towards the product(s)!
Product
2NH3
…or you could simply identify the product as
NH3 (ammonia)

8. Identify the REACTANTS in this equation.
SPI
Reactants & Products
Review
Science
2NaCl Na + Cl2
Identify the REACTANTS in this equation.
Reminder:
The arrow always points towards the products!
Reactants
2Na and CL2
…or you could simply indentify the reactants as
Na (sodium) and Cl (chlorine)

9. Identify the PRODUCTS in this equation.
SPI
Reactants & Products
Review
Science
Sn + 2H2O SnO2 + 2H2
Identify the PRODUCTS in this equation.
Reminder:
The arrow always points towards the products!
Products
Sn and 2H2O
…or you could simply indentify the products as
Sn (tin) and H2O (water)

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

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

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

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

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