AP Exam Self Check Unit 2

AP Chemistry Exam Prep – Unit 2 Rescue Pack

🌟 Common Mistakes (Watch Out!)

• Mistake 1: Thinking all bonds between metals and nonmetals are purely ionic.
• Mistake 2: Forgetting resonance structures or drawing them incorrectly.
• Mistake 3: Confusing molecular polarity with bond polarity.
• Mistake 4: Misapplying the concept of lattice energy and its trends.
• Mistake 5: Overlooking the role of electronegativity in bond type prediction.

🎯 Grade Predictor Quick Test

Answer the following 5 questions to estimate your grade:

1. What type of bond is found in NaCl?
Ionic
Covalent
Metallic

2. Which molecule exhibits resonance?
CH₄
NO₃⁻
H₂O

3. Which factor increases lattice energy?
Larger ionic radius
Higher ion charge
Lower ion charge

4. Which element is the most electronegative?
Fluorine
Oxygen
Nitrogen

5. Which molecule is nonpolar overall?
NH₃
H₂O
CO₂

📊 AP Score Estimator (Rough Guide for Unit 2 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 2)

• Review types of chemical bonds and when they form.
• Practice drawing Lewis structures with formal charges and resonance.
• Memorize bond polarity vs. molecular polarity patterns.
• Complete at least 10 MCQs and 2 FRQs from Unit 2.
• Review a set of tricky polarity and bonding examples.