1. Neuron Nudge 2/5
Which of the following represents a physical change? Explain how you know.

2. Required Prior Knowledge Learning Objective(s)
Classwork 2/5
Required Prior Knowledge
Learning Objective(s)
Next Steps
Chemical and physical changes
Chemical equations
I can distinguish between chemical and physical changes.
I can balance chemical equations.
I can describe reactions in solution.
LEAVE THIS BLANK

3. Chemical vs. Physical
Chemical: bonds are broken and new bonds are formed
Physical: bonds are the same before and after
How can you tell?

4. Chemical Reactions What is…and what isn’t?
What is…and what isn’t? Part 2

5. Balanced Chemical Equations
What do they show?
Reactants and products
Phases
Conservation of matter and charge  balance using coefficients
Moles on left = moles on right
Charge on left = charge on right

6. Check Your Answers

7. Precipitation Reactions
Formation of precipitate drives chemical reaction
Know your solubility rules!
Look for two aqueous solutions as reactants

8. Predict KNO3(aq) + BaCl2(aq) Na2SO4(aq) + Pb(NO3)2(aq)
KOH(aq) + Fe(NO3)3(aq)

9. Observe No reaction White precipitate, PbSO4
Reddish-brown precipitate, Fe(OH)3

10. Writing Equations for Reactions in Solution
Complete balanced equation
Everything written as compounds (even aqueous)
Complete ionic equation
Dissociated ionic compounds are written as ions
Net ionic equation
Only ions involved in reaction are included
Spectator ions are not written

11. Try It: Precipitation Reactions
Aqueous potassium chloride is added to aqueous silver nitrate to form a silver chloride precipitate plus aqueous potassium nitrate.
Aqueous potassium hydroxide is mixed with aqueous iron (III) nitrate to form a precipitate of iron (III) hydroxide and aqueous potassium nitrate.

12. Try It: Predicting Precipitation Products
Solutions of lead nitrate and potassium choride are mixed.
Solutions of sodium sulfate and calcium bromide are mixed.
Solutions of aluminum acetate and lithium hydroxide are mixed.
Solutions of iron(III) sulfate and sodium sulfide are mixed.

13. Try It: Predicting Precipitation Products
Solutions of aluminum sulfate and calcium hydroxide are mixed.
Solutions of potassium chromate and lead acetate are mixed.
Solutions of silver nitrate and ammonium sulfide are mixed.

14. Evaluate (Next Steps) Confident students:
How will you make sure you remember this content?
Confused or uncertain students:
What questions do you have?
How will you make sure you master this material before our next test or quiz?

15. Homework Practice Naming Compounds (Writing Formulas…)
Finish predicting precipitation products
Check Qualitative Analysis