AP EXAM SELF CHECK UNIT 4

AP Chemistry Exam Prep – Unit 4 Rescue Pack

🌟 Common Mistakes (Watch Out!)

• Mistake 1: Forgetting to balance chemical equations correctly.
• Mistake 2: Misidentifying the type of chemical reaction.
• Mistake 3: Confusing spectator ions in ionic equations.
• Mistake 4: Writing molecular instead of net ionic equations.
• Mistake 5: Misapplying solubility rules in precipitation reactions.

🎯 Grade Predictor Quick Test

Answer the following 5 questions to estimate your grade:

1. What is the net ionic equation for NaOH + HCl?
H⁺ + OH⁻ → H₂O
Na⁺ + Cl⁻ → NaCl
NaOH + HCl → NaCl + H₂O

2. What type of reaction is Zn + CuSO₄ → ZnSO₄ + Cu?
Single replacement
Double replacement
Decomposition

3. Which of the following compounds is insoluble in water?
NaNO₃
KCl
AgCl

4. Which of the following are spectator ions in the reaction between Na₂CO₃ and HCl?
Na⁺ and Cl⁻
H⁺ and CO₃²⁻
HCO₃⁻ and Na⁺

5. What is formed when H₂SO₄ reacts with Ba(OH)₂?
Only H₂O
BaSO₄ + H₂O
BaOH + H₂SO₄

📊 AP Score Estimator (Rough Guide for Unit 4 Mastery)

Enter your practice test scores to estimate your AP score:

MCQ Score (out of 60):

FRQ Score (out of 40):

📋 Final Week Action Checklist (Unit 4)

• Review types of reactions (synthesis, decomposition, etc.).
• Practice writing net ionic equations.
• Work through at least 10 MCQs and 2 FRQs on precipitation, acid-base, and redox reactions.
• Memorize solubility rules with common ion examples.
• Quiz yourself on ionic reactions and spectator ions.