---
title: "AP Chemistry FRQ 5 Short Answer Practice"
description: "141 Short Answer Question (FRQ 5)s written in the AP format, each scored part by part."
canonical: "https://fiveable.me/ap-chem/frqs/frq-5"
type: "frq-type-practice"
subject: "AP Chemistry"
---

# AP Chemistry FRQ 5 Short Answer Practice

## What the FRQ 5 Short Answer asks

FRQ 5 is the second of four short-answer questions on the AP Chemistry exam, worth 4 points and focused on one topic. In this set, you write or predict, evaluate a student’s claim, justify a result, and finish with a calculation.

- **4 points**: across parts A to D
- **105 min**: for all seven FRQs
- **50%**: of your exam score comes from FRQs

| Part | What it asks | Points |
| --- | --- | --- |
| A: Write or predict | An electron configuration, net ionic equation, or geometry | 1 |
| B: Evaluate a claim | Agree or disagree with a student’s claim, with a reason | 1 |
| C: Justify | The chemical reason behind an observation or comparison | 1 |
| D: Calculate | A calculation from the data, with units | 1 |

## How FRQ 5 Short Answer practice works

1. **Read the full question.** The setup, the figure or data table, and every part, laid out the way the exam shows them.
2. **Write on a 9-minute timer.** A pace that fits all seven questions into the 105-minute section. Pause it or turn it off, and your response saves as you go.
3. **Submit for a score out of 4.** Your response is scored against the scoring guidelines written for that question. Your first score is included.

## All 141 questions

### Unit 1: Atomic Structure and Properties (9)
- [Atomic structure and ionization energy trends](/ap-chem/frq-practice?id=69853500e84ac93142252d24&type=frq-5-short-answer)
- [Period 3 element properties and ionization energy](/ap-chem/frq-practice?id=698535dfe84ac93142252d30&type=frq-5-short-answer)
- [Element identification, electron configuration, atomic properties](/ap-chem/frq-practice?id=69853760e84ac93142252d41&type=frq-5-short-answer)
- [Element X properties and ionization trends](/ap-chem/frq-practice?id=69853b80e84ac93142252d7d&type=frq-5-short-answer)
- [Electronic structure determination through photoelectron spectroscopy](/ap-chem/frq-practice?id=69853d59e84ac93142252d94&type=frq-5-short-answer)
- [Group 1 alkali metal properties and isotopic composition](/ap-chem/frq-practice?id=69853e27e84ac93142252d9d&type=frq-5-short-answer)
- [Element Q atomic structure and ionization trends](/ap-chem/frq-practice?id=6985401fe84ac93142252db7&type=frq-5-short-answer)
- [Atomic structure, ionization energy, periodic trends](/ap-chem/frq-practice?id=698541dde84ac93142252dcd&type=frq-5-short-answer)
- [Magnesium atomic structure and periodic trends](/ap-chem/frq-practice?id=6985425be84ac93142252dd5&type=frq-5-short-answer)

### Unit 3: Properties of Substances and Mixtures (33)
- [Molecular structure, hybridization, intermolecular forces, volatility](/ap-chem/frq-practice?id=6975252f8bf79ce1a59344c2&type=frq-5-short-answer)
- [Molecular geometry and intermolecular forces in hydrides](/ap-chem/frq-practice?id=6985369fe84ac93142252d38&type=frq-5-short-answer)
- [Carbon compound hybridization and intermolecular forces](/ap-chem/frq-practice?id=698536f3e84ac93142252d3d&type=frq-5-short-answer)
- [Molecular geometry and intermolecular forces in halogenated methanes](/ap-chem/frq-practice?id=6985372ce84ac93142252d3e&type=frq-5-short-answer)
- [Molecular geometry and intermolecular forces comparison](/ap-chem/frq-practice?id=69853773e84ac93142252d43&type=frq-5-short-answer)
- [Molecular geometry and intermolecular forces comparison](/ap-chem/frq-practice?id=69853822e84ac93142252d4b&type=frq-5-short-answer)
- [Chemical structure and intermolecular forces comparison](/ap-chem/frq-practice?id=698538aae84ac93142252d53&type=frq-5-short-answer)
- [Molecular geometry and intermolecular forces in isomers](/ap-chem/frq-practice?id=698538cee84ac93142252d56&type=frq-5-short-answer)
- [Boiling points and intermolecular forces in fluoromethane and methanol](/ap-chem/frq-practice?id=6985391de84ac93142252d5a&type=frq-5-short-answer)
- [Molecular geometry, boiling points, intermolecular forces](/ap-chem/frq-practice?id=6985394be84ac93142252d5e&type=frq-5-short-answer)
- [Carbon hybridization, intermolecular forces, boiling points](/ap-chem/frq-practice?id=6985399de84ac93142252d63&type=frq-5-short-answer)
- [Molecular geometry and intermolecular forces in isomers](/ap-chem/frq-practice?id=698539d1e84ac93142252d66&type=frq-5-short-answer)
- [Molecular geometry and polarity of trihalides](/ap-chem/frq-practice?id=69853ad9e84ac93142252d75&type=frq-5-short-answer)
- [Molecular geometry and intermolecular forces comparison](/ap-chem/frq-practice?id=69853b6ee84ac93142252d7c&type=frq-5-short-answer)
- [Isomer properties: boiling point and vapor pressure](/ap-chem/frq-practice?id=69853baae84ac93142252d7f&type=frq-5-short-answer)
- [Structural isomers, intermolecular forces, boiling points](/ap-chem/frq-practice?id=69853bf2e84ac93142252d82&type=frq-5-short-answer)
- [Photoelectron spectroscopy and ionization energy trends](/ap-chem/frq-practice?id=69853c3de84ac93142252d84&type=frq-5-short-answer)
- [Molecular geometry, boiling points, intermolecular forces fluorides](/ap-chem/frq-practice?id=69853c4de84ac93142252d85&type=frq-5-short-answer)
- [Intermolecular forces and volatility of organic compounds](/ap-chem/frq-practice?id=69853d13e84ac93142252d8d&type=frq-5-short-answer)
- [Structural isomers, intermolecular forces, vapor pressure](/ap-chem/frq-practice?id=69853d1de84ac93142252d90&type=frq-5-short-answer)
- [Molecular geometry and intermolecular forces in hydrides](/ap-chem/frq-practice?id=69853daee84ac93142252d96&type=frq-5-short-answer)
- [Molecular structure, bonding, and intermolecular forces](/ap-chem/frq-practice?id=69853ec2e84ac93142252da5&type=frq-5-short-answer)
- [Hydrazine and ethane intermolecular forces properties](/ap-chem/frq-practice?id=69853f01e84ac93142252da7&type=frq-5-short-answer)
- [Molecular polarity and intermolecular forces comparison](/ap-chem/frq-practice?id=69853f3ce84ac93142252dac&type=frq-5-short-answer)
- [Molecular structure and intermolecular forces comparison](/ap-chem/frq-practice?id=69853fbce84ac93142252db2&type=frq-5-short-answer)
- [Molecular geometry and polarity of carbon and sulfur dioxide](/ap-chem/frq-practice?id=69853ff0e84ac93142252db5&type=frq-5-short-answer)
- [Molecular geometry and intermolecular forces comparison](/ap-chem/frq-practice?id=6985406ee84ac93142252dbb&type=frq-5-short-answer)
- [Structural isomers, boiling points, intermolecular forces](/ap-chem/frq-practice?id=6985408ee84ac93142252dbc&type=frq-5-short-answer)
- [Chlorinated hydrocarbon polarity and intermolecular forces](/ap-chem/frq-practice?id=698540e2e84ac93142252dc2&type=frq-5-short-answer)
- [Molecular geometry and polarity of fluorinated compounds](/ap-chem/frq-practice?id=69854119e84ac93142252dc4&type=frq-5-short-answer)
- [Structural isomers, intermolecular forces, boiling points](/ap-chem/frq-practice?id=69854174e84ac93142252dc9&type=frq-5-short-answer)
- [Intermolecular forces in organic compounds](/ap-chem/frq-practice?id=6985420ee84ac93142252dcf&type=frq-5-short-answer)
- [Intermolecular forces and molecular properties comparison](/ap-chem/frq-practice?id=69854374e84ac93142252ddd&type=frq-5-short-answer)

### Unit 4: Chemical Reactions (21)
- [Precipitation reaction and ion concentration analysis](/ap-chem/frq-practice?id=697524ce8bf79ce1a59344be&type=frq-5-short-answer)
- [Photoelectron spectroscopy and atomic structure analysis](/ap-chem/frq-practice?id=69853849e84ac93142252d4d&type=frq-5-short-answer)
- [Photoelectron spectroscopy and atomic electron configuration](/ap-chem/frq-practice?id=698538ebe84ac93142252d57&type=frq-5-short-answer)
- [Silver chromate precipitation and limiting reactants](/ap-chem/frq-practice?id=69853911e84ac93142252d59&type=frq-5-short-answer)
- [Period 3 elements, photoelectron spectroscopy, atomic properties](/ap-chem/frq-practice?id=69853985e84ac93142252d62&type=frq-5-short-answer)
- [Precipitation reaction stoichiometry and limiting reactants](/ap-chem/frq-practice?id=69853a8de84ac93142252d70&type=frq-5-short-answer)
- [Photoelectron spectroscopy, ionization energy, atomic radius](/ap-chem/frq-practice?id=69853ad3e84ac93142252d74&type=frq-5-short-answer)
- [Silver chromate precipitation and limiting reactant analysis](/ap-chem/frq-practice?id=69853b2be84ac93142252d79&type=frq-5-short-answer)
- [Silver carbonate precipitation and ion stoichiometry](/ap-chem/frq-practice?id=69853befe84ac93142252d81&type=frq-5-short-answer)
- [Precipitation reaction between calcium chloride and sodium carbonate](/ap-chem/frq-practice?id=69853cdae84ac93142252d8b&type=frq-5-short-answer)
- [Nitrogen oxide reaction stoichiometry and pressure changes](/ap-chem/frq-practice?id=69853e75e84ac93142252da0&type=frq-5-short-answer)
- [Silver chromate precipitation and ion concentrations](/ap-chem/frq-practice?id=69853f04e84ac93142252da8&type=frq-5-short-answer)
- [Periodic trends, ionization energy, electron configuration](/ap-chem/frq-practice?id=69853f61e84ac93142252dae&type=frq-5-short-answer)
- [Precipitation reaction between silver nitrate and sodium chromate](/ap-chem/frq-practice?id=69853f8de84ac93142252db0&type=frq-5-short-answer)
- [Atomic structure, ionization energy, ionic radius](/ap-chem/frq-practice?id=698540a8e84ac93142252dbf&type=frq-5-short-answer)
- [Magnesium isotopes, electron configuration, atomic radius](/ap-chem/frq-practice?id=6985412ce84ac93142252dc6&type=frq-5-short-answer)
- [Silver nitrate and potassium chromate precipitation reaction](/ap-chem/frq-practice?id=69854170e84ac93142252dc8&type=frq-5-short-answer)
- [Silver chromate precipitation and ion concentration](/ap-chem/frq-practice?id=69854200e84ac93142252dce&type=frq-5-short-answer)
- [Redox titration of iron(II) with permanganate](/ap-chem/frq-practice?id=698542c8e84ac93142252dd7&type=frq-5-short-answer)
- [Silver chromate precipitation and limiting reagent analysis](/ap-chem/frq-practice?id=69854535e84ac93142252dea&type=frq-5-short-answer)
- [Precipitation reaction stoichiometry and limiting reactants](/ap-chem/frq-practice?id=69854703e84ac93142252dfc&type=frq-5-short-answer)

### Unit 5: Kinetics (10)
- [Reaction kinetics, rate laws, reaction mechanisms](/ap-chem/frq-practice?id=69853a6de84ac93142252d6f&type=frq-5-short-answer)
- [Kinetics of nitryl chloride decomposition reaction](/ap-chem/frq-practice?id=69853c9fe84ac93142252d8a&type=frq-5-short-answer)
- [Reaction kinetics, rate laws, and mechanisms](/ap-chem/frq-practice?id=69853d2ee84ac93142252d91&type=frq-5-short-answer)
- [Reaction kinetics, rate laws, elementary steps](/ap-chem/frq-practice?id=69853e73e84ac93142252d9f&type=frq-5-short-answer)
- [Reaction kinetics of chlorine monoxide decomposition](/ap-chem/frq-practice?id=69854197e84ac93142252dcb&type=frq-5-short-answer)
- [Nitrogen dioxide decomposition kinetics and mechanisms](/ap-chem/frq-practice?id=6985430de84ac93142252dda&type=frq-5-short-answer)
- [Reaction kinetics, rate laws, activation energy](/ap-chem/frq-practice?id=69854460e84ac93142252de3&type=frq-5-short-answer)
- [Gas-phase reaction kinetics and rate laws](/ap-chem/frq-practice?id=6985460ee84ac93142252df1&type=frq-5-short-answer)
- [Reaction kinetics, rate laws, elementary mechanisms](/ap-chem/frq-practice?id=69854768e84ac93142252dff&type=frq-5-short-answer)
- [Gas decomposition kinetics and reaction mechanisms](/ap-chem/frq-practice?id=69854965e84ac93142252e13&type=frq-5-short-answer)

### Unit 6: Thermochemistry (16)
- [Hydrazine combustion thermodynamics and bond energy](/ap-chem/frq-practice?id=69853c71e84ac93142252d87&type=frq-5-short-answer)
- [Ammonium nitrate dissolution enthalpy and calorimetry](/ap-chem/frq-practice?id=69853d41e84ac93142252d92&type=frq-5-short-answer)
- [Nitrosyl chloride decomposition kinetics and thermodynamics](/ap-chem/frq-practice?id=69853dd4e84ac93142252d99&type=frq-5-short-answer)
- [Urea dissolution enthalpy and calorimetry measurements](/ap-chem/frq-practice?id=69853e16e84ac93142252d9c&type=frq-5-short-answer)
- [Dissolution thermodynamics of calcium chloride](/ap-chem/frq-practice?id=69853ea5e84ac93142252da2&type=frq-5-short-answer)
- [Hydrogenation of ethene: thermodynamics and calorimetry](/ap-chem/frq-practice?id=6985409be84ac93142252dbd&type=frq-5-short-answer)
- [Thermodynamic properties and phase changes of hydrazine](/ap-chem/frq-practice?id=6985414ce84ac93142252dc7&type=frq-5-short-answer)
- [Hydrazine combustion thermodynamics and molecular geometry](/ap-chem/frq-practice?id=698541d6e84ac93142252dcc&type=frq-5-short-answer)
- [Reaction kinetics, rate laws, reaction mechanisms](/ap-chem/frq-practice?id=6985424fe84ac93142252dd4&type=frq-5-short-answer)
- [Specific heat capacity determination through calorimetry](/ap-chem/frq-practice?id=69854403e84ac93142252de0&type=frq-5-short-answer)
- [Molecular geometry, intermolecular forces, phase changes](/ap-chem/frq-practice?id=698544fee84ac93142252de8&type=frq-5-short-answer)
- [Ammonium nitrate dissolution enthalpy determination](/ap-chem/frq-practice?id=6985469be84ac93142252df6&type=frq-5-short-answer)
- [Endothermic dissolution and enthalpy change measurement](/ap-chem/frq-practice?id=698547b0e84ac93142252e03&type=frq-5-short-answer)
- [Lithium chloride dissolution thermodynamics and calorimetry](/ap-chem/frq-practice?id=698548f9e84ac93142252e0e&type=frq-5-short-answer)
- [Molecular structure, intermolecular forces, thermodynamic properties](/ap-chem/frq-practice?id=698549b9e84ac93142252e16&type=frq-5-short-answer)
- [Hydrogen-chlorine bond formation and reaction enthalpy](/ap-chem/frq-practice?id=69854be6e84ac93142252e29&type=frq-5-short-answer)

### Unit 7: Equilibrium (15)
- [Equilibrium constant, pressure, temperature effects](/ap-chem/frq-practice?id=6975256c8bf79ce1a59344c4&type=frq-5-short-answer)
- [NOCl decomposition equilibrium and Le Chatelier's principle](/ap-chem/frq-practice?id=69853d1be84ac93142252d8f&type=frq-5-short-answer)
- [Nitrogen monoxide and chlorine gas equilibrium](/ap-chem/frq-practice?id=69853e10e84ac93142252d9b&type=frq-5-short-answer)
- [Methanol synthesis equilibrium and thermodynamic properties](/ap-chem/frq-practice?id=69853f4ee84ac93142252dad&type=frq-5-short-answer)
- [Methanol synthesis equilibrium and Le Chatelier's principle](/ap-chem/frq-practice?id=698540d4e84ac93142252dc1&type=frq-5-short-answer)
- [Nitrogen monoxide and chlorine gas equilibrium](/ap-chem/frq-practice?id=69854233e84ac93142252dd2&type=frq-5-short-answer)
- [Exothermic equilibrium shift with pressure and temperature changes](/ap-chem/frq-practice?id=698543dce84ac93142252ddf&type=frq-5-short-answer)
- [Methanol synthesis equilibrium and Le Chatelier's principle](/ap-chem/frq-practice?id=698544f9e84ac93142252de6&type=frq-5-short-answer)
- [Nitrogen monoxide and bromine equilibrium reaction](/ap-chem/frq-practice?id=6985460ce84ac93142252df0&type=frq-5-short-answer)
- [Nitrosyl chloride formation equilibrium and Le Chatelier shifts](/ap-chem/frq-practice?id=698546e1e84ac93142252dfb&type=frq-5-short-answer)
- [Equilibrium constant and Le Chatelier's principle applications](/ap-chem/frq-practice?id=69854798e84ac93142252e02&type=frq-5-short-answer)
- [Phosphorus pentachloride decomposition equilibrium](/ap-chem/frq-practice?id=69854862e84ac93142252e0a&type=frq-5-short-answer)
- [Nitrogen dioxide and dinitrogen tetroxide equilibrium](/ap-chem/frq-practice?id=69854b42e84ac93142252e21&type=frq-5-short-answer)
- [Equilibrium constant expression and Le Chatelier's principle](/ap-chem/frq-practice?id=69854beee84ac93142252e2a&type=frq-5-short-answer)
- [Exothermic equilibrium gas-phase reaction conditions](/ap-chem/frq-practice?id=69854cdfe84ac93142252e34&type=frq-5-short-answer)

### Unit 8: Acids and Bases (20)
- [Acid strength, dissociation constants, oxygen effects](/ap-chem/frq-practice?id=6975252f8bf79ce1a59344c1&type=frq-5-short-answer)
- [Weak acid strength and conjugate base stability](/ap-chem/frq-practice?id=69853fc3e84ac93142252db3&type=frq-5-short-answer)
- [Weak acid strength and conjugate base properties](/ap-chem/frq-practice?id=69854050e84ac93142252db9&type=frq-5-short-answer)
- [Acid dissociation constants and molecular structure properties](/ap-chem/frq-practice?id=69854108e84ac93142252dc3&type=frq-5-short-answer)
- [Weak acid strength comparison and dissociation constants](/ap-chem/frq-practice?id=69854190e84ac93142252dca&type=frq-5-short-answer)
- [Weak acid strength and dissociation equilibrium](/ap-chem/frq-practice?id=69854236e84ac93142252dd3&type=frq-5-short-answer)
- [Carboxylic acid strength and electronegativity effects](/ap-chem/frq-practice?id=6985430ce84ac93142252dd9&type=frq-5-short-answer)
- [Carboxylic acid strength and ionization properties](/ap-chem/frq-practice?id=69854416e84ac93142252de1&type=frq-5-short-answer)
- [Weak acid strength: electronegativity and atomic properties](/ap-chem/frq-practice?id=698544f9e84ac93142252de7&type=frq-5-short-answer)
- [Acid strength, electronegativity, conjugate base properties](/ap-chem/frq-practice?id=698545cfe84ac93142252dee&type=frq-5-short-answer)
- [Acid strength and conjugate base properties of hypohalous acids](/ap-chem/frq-practice?id=698546bfe84ac93142252df8&type=frq-5-short-answer)
- [Weak acid strength and dissociation equilibrium constants](/ap-chem/frq-practice?id=69854756e84ac93142252dfd&type=frq-5-short-answer)
- [Relative acid strength and ionization properties](/ap-chem/frq-practice?id=698547f2e84ac93142252e05&type=frq-5-short-answer)
- [Carboxylic acid strength and conjugate base stabilization](/ap-chem/frq-practice?id=6985487fe84ac93142252e0b&type=frq-5-short-answer)
- [Weak acid strength, electronegativity, dissociation constants](/ap-chem/frq-practice?id=6985491be84ac93142252e0f&type=frq-5-short-answer)
- [Weak acid strength and conjugate base properties](/ap-chem/frq-practice?id=698549b3e84ac93142252e15&type=frq-5-short-answer)
- [Weak acid strength and conjugate base properties](/ap-chem/frq-practice?id=69854a38e84ac93142252e19&type=frq-5-short-answer)
- [Weak acid dissociation and titration equivalence point](/ap-chem/frq-practice?id=69854b0ee84ac93142252e1f&type=frq-5-short-answer)
- [Acid dissociation equilibrium and ionization](/ap-chem/frq-practice?id=69854bc1e84ac93142252e27&type=frq-5-short-answer)
- [Weak acid dissociation equilibrium and conjugate base strength](/ap-chem/frq-practice?id=69854c42e84ac93142252e2b&type=frq-5-short-answer)

### Unit 9: Thermodynamics and Electrochemistry (17)
- [Galvanic cell reactions and electrode mass changes](/ap-chem/frq-practice?id=697409cb5bafccfb4e302f46&type=frq-5-short-answer)
- [Methanol synthesis equilibrium and reaction kinetics](/ap-chem/frq-practice?id=69855d86e84ac93142252e9d&type=frq-5-short-answer)
- [Galvanic cell thermodynamics and electron flow](/ap-chem/frq-practice?id=69855e03e84ac93142252e9e&type=frq-5-short-answer)
- [Galvanic cell electrode reactions and potentials](/ap-chem/frq-practice?id=69855e85e84ac93142252ea1&type=frq-5-short-answer)
- [Methanol synthesis equilibrium thermodynamics and temperature effects](/ap-chem/frq-practice?id=69855f30e84ac93142252ea4&type=frq-5-short-answer)
- [Galvanic cell thermodynamics and electrode reactions](/ap-chem/frq-practice?id=69855fbfe84ac93142252ea7&type=frq-5-short-answer)
- [Galvanic cell potential and electrode reactions](/ap-chem/frq-practice?id=6985605ae84ac93142252ea9&type=frq-5-short-answer)
- [Galvanic cell with chromium and silver electrodes](/ap-chem/frq-practice?id=698560efe84ac93142252ead&type=frq-5-short-answer)
- [Galvanic cell thermodynamics and electrode reactions](/ap-chem/frq-practice?id=69856178e84ac93142252eb0&type=frq-5-short-answer)
- [Galvanic cell thermodynamics with manganese and lead](/ap-chem/frq-practice?id=69856200e84ac93142252eb3&type=frq-5-short-answer)
- [Zinc-copper galvanic cell thermodynamic properties](/ap-chem/frq-practice?id=69856288e84ac93142252eb7&type=frq-5-short-answer)
- [Galvanic cell electrode reactions and potential](/ap-chem/frq-practice?id=69856313e84ac93142252eb9&type=frq-5-short-answer)
- [Galvanic cell redox potentials and electrode reactions](/ap-chem/frq-practice?id=69856512e84ac93142252ec5&type=frq-5-short-answer)
- [Methanol synthesis equilibrium and thermodynamic favorability](/ap-chem/frq-practice?id=698565a8e84ac93142252ec8&type=frq-5-short-answer)
- [Galvanic cell electrode reactions and potentials](/ap-chem/frq-practice?id=69856634e84ac93142252ecc&type=frq-5-short-answer)
- [Galvanic cell electrode reactions and potentials](/ap-chem/frq-practice?id=6985675ee84ac93142252ed3&type=frq-5-short-answer)
- [Galvanic cell thermodynamics with copper and silver](/ap-chem/frq-practice?id=698567eee84ac93142252ed4&type=frq-5-short-answer)

## Sample question

**Atomic structure and ionization energy trends**

A scientist is investigating the atomic structure and properties of Phosphorus (P) and Sulfur (S). The scientist obtains the photoelectron spectrum for Phosphorus, which is shown in Figure 1.

Figure 1:
  Type: diagram
  Caption: Figure 1. Photoelectron spectrum of Phosphorus (binding energy scale increases to the left)
  URL: https://kcbwzropdukwhmmvdylp.supabase.co/storage/v1/object/public/frq_stimulus/ap-chem/4f0994d0-dc03-468b-88bf-70ac78ccdcfb_fig1.jpg
  Placement: before-part
  Part Letter: A

Part A (1 point):
  Prompt: Based on the photoelectron spectrum in Figure 1, **write** the complete ground-state electron configuration for the Phosphorus atom.
  Verb: write

Part B (1 point):
  Prompt: A student claims that the atomic radius of a Sulfur atom is smaller than that of a Phosphorus atom. Do you agree or disagree? Justify your answer using principles of atomic structure.
  Verb: agree/disagree

Part C (1 point):
  Prompt: The first ionization energy of Sulfur is 1000 kJ/mol, while the first ionization energy of Phosphorus is 1012 kJ/mol. Justify this observation based on electron configuration and Coulombic attraction.
  Verb: justify

Data Table for Part D:
  Caption: Table 1. Isotopic data for naturally occurring Sulfur
  Headers: Isotope | Atomic Mass (amu) | Relative Abundance (%)
  S-32 | 31.97 | 95.02
  S-33 | 32.97 | 0.75
  S-34 | 33.97 | 4.23

Part D (1 point):
  Prompt: Using the data in Table 1, **calculate** the average atomic mass of Sulfur. Show your work.
  Context: The scientist analyzes a sample of naturally occurring Sulfur and records the data shown in Table 1.
  Verb: calculate

Image URLs (1):
  - https://kcbwzropdukwhmmvdylp.supabase.co/storage/v1/object/public/frq_stimulus/ap-chem/4f0994d0-dc03-468b-88bf-70ac78ccdcfb_fig1.jpg

## Questions

**How many responses can I get scored?**

You can read every question without a plan. Your first scored response is included. A plan unlocks unlimited scoring.

**How do I answer the agree or disagree part?**

State whether you agree, then give the chemical reason. An answer with no reasoning does not earn the point.

**How much should I write for each part?**

Match the task verb. Identify can take a word or phrase. Explain and justify need the chemical reason, stated in a sentence or two.

**How are short-answer questions different from FRQs 1 to 3?**

Short answers are 4 points and stay on one topic, usually with one point per scored step. FRQs 1 to 3 are 10-point problems with about six parts.

**Can I use a calculator and the equations sheet?**

Yes. The practice screen has a calculator and the AP Chemistry equations sheet with the periodic table, which you also get on exam day.

## Related

- [FRQ 5 Short Answer exam guide](/ap-chem/ap-chemistry-exam/ap-chem-frq-short/study-guide/ap-chem-frq-short)
- [AP Chemistry FRQ 1 Long Answer practice](/ap-chem/frqs/frq-1)
- [AP Chemistry FRQ 2 Long Answer practice](/ap-chem/frqs/frq-2)
- [AP Chemistry FRQ 3 Long Answer practice](/ap-chem/frqs/frq-3)
- [AP Chemistry FRQ 4 Short Answer practice](/ap-chem/frqs/frq-4)
- [AP Chemistry FRQ 6 Short Answer practice](/ap-chem/frqs/frq-6)
- [AP Chemistry FRQ 7 Short Answer practice](/ap-chem/frqs/frq-7)
- [AP Chemistry FRQs](/ap-chem/frqs)
- Any question by id: the `get_frq` tool on the [Fiveable MCP server](/mcp/docs)

## About This Document

Canonical Fiveable pages are available as Markdown at the same path plus `.md`.

- [llms.txt](https://fiveable.me/llms.txt): index of Fiveable's sections and URL patterns
- [llms-full.txt](https://fiveable.me/llms-full.txt): complete subject and unit listing
- [MCP server](https://fiveable.me/mcp): call Fiveable as tools instead of fetching pages (`https://fiveable.me/api/mcp`)
- [MCP server for AP teachers](https://fiveable.me/mcp/teachers): a teacher's classes, assignments and AP-rubric grading (`https://fiveable.me/api/mcp/teacher`)