Journal Entry:
Consider these reactions:

CaCO₃ (aq) → CaO (aq) + CO₂ (g)

CO₂ (g) + NaOH (aq) → NaHCO₃ (aq)

1. How are these two reactions different?

2. How would you describe, in words, what happens to the reactants in each case?

Learning Intentions

• We will  learn how to identify patterns in chemical equations that reflect different types of reactions.
• We will learn how to classify chemical equations as representing combination, decomposition, single exchange, or double exchange reactions.

Closing Task:

 You can predict products of  chemical reaction using types of reactions clues.

Content Standards being covered:

Student understands what the letters and numbers stand for in a compound formula, can use those letter and numbers to determine how many of each type of element there are in a formula.

Student can create mathematical representations of chemical reactions and use them to make calculations about products and reactants.

Students can use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction. (HS-PS1-7 and CCC Energy and Matter)