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AP Chemistry Thermochemistry — practice questions

Explore 22 free Thermochemistry questions in AP Chemistry Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Thermochemistry questions and exercises with answers

Showing questions 1–22 of 22.

Energy an object has because of its position, composition or condition is called:Read the answer and worked solution →A change that releases heat to its surroundings is described as:Read the answer and worked solution →One joule is defined as the energy used when a force of one newton moves an object:Read the answer and worked solution →Heat capacity is proportional to how much substance is present, which makes it:Read the answer and worked solution →The specific heat of liquid water is about:Read the answer and worked solution →Compared with a small pan of the same metal, a pan of five times the mass has a heat capacity that is:Read the answer and worked solution →Specific heat is an intensive property, meaning what matters is:Read the answer and worked solution →When a substance absorbs thermal energy and warms up, the value of q is:Read the answer and worked solution →Solid water, that is ice, has a specific heat of about:Read the answer and worked solution →Most metals have specific heats that are:Read the answer and worked solution →In a bimetallic strip thermometer, brass and steel are paired because on heating:Read the answer and worked solution →Increasing the thermal energy of a sample raises its temperature, provided that:Read the answer and worked solution →Compared with chemical reactions, the energy changes in nuclear reactions are larger by a factor of roughly:Read the answer and worked solution →Heating 800 grams of water by one degree Celsius requires how many times the energy needed for one gram?Read the answer and worked solution →A flask of water heated from 21 degrees Celsius to 85 degrees Celsius has absorbed heat, so its q is:Read the answer and worked solution →The specific heat of a substance is usually treated as constant across a chapter's temperature range because the variation is:Read the answer and worked solution →The energy needed to raise the temperature of water depends on atmospheric pressure and on:Read the answer and worked solution →Extensive or intensive?Read the answer and worked solution →Which specific heat is higher?Read the answer and worked solution →True or false: heat and energyRead the answer and worked solution →Match each term to its meaningRead the answer and worked solution →Do the calorimetry arithmeticRead the answer and worked solution →

Worked practice questions

Energy an object has because of its position, composition or condition is called:

  1. Potential energy
  2. Kinetic energy
  3. Radiant energy
  4. Nuclear energy
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Correct answer: A. Potential energy

1. One scheme classifies energy into two types. 2. Potential energy is the energy an object has because of its relative position, composition, or condition. 3. Kinetic energy is the energy that an object possesses because of its motion. 4. A battery has potential energy because the chemicals within it can produce electricity that can do work. _Source: OpenStax Chemistry 2e (CC BY 4.0), Ch 5 'Thermochemistry', sections 5.1-5.3_

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A change that releases heat to its surroundings is described as:

  1. Exothermic
  2. Endothermic
  3. Isothermal
  4. Adiabatic
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Correct answer: A. Exothermic

1. The prefix records the direction heat travels. 2. A change that releases heat is called an exothermic process. 3. A change that absorbs heat runs the other way and is endothermic. 4. Isothermal describes constant temperature rather than heat direction. _Source: OpenStax Chemistry 2e (CC BY 4.0), Ch 5 'Thermochemistry', sections 5.1-5.3_

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One joule is defined as the energy used when a force of one newton moves an object:

  1. One degree
  2. One metre
  3. One second
  4. One gram
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Correct answer: B. One metre

1. The joule is the SI unit for energy, work and heat alike. 2. A joule is defined as the amount of energy used when a force of 1 newton moves an object 1 metre. 3. One joule is equivalent to 1 kilogram metre squared per second squared. 4. That combination is also called one newton metre. _Source: OpenStax Chemistry 2e (CC BY 4.0), Ch 5 'Thermochemistry', sections 5.1-5.3_

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More Chemistry topics

Composition of Substances and SolutionsEquilibria of Other Reaction ClassesSolutions and ColloidsStoichiometry of Chemical ReactionsThermodynamicsAcid-Base EquilibriaAtoms, Molecules, and IonsChemical Bonding and Molecular Geometry