https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:thermochemistry/x2613d8165d88df5e:thermal-energy-and-equilibrium/v/thermal-energy-temperature-and-heat 2024-06-15T21:30:38.850830378Z Thermal energy, temperature, and heat Thermal energy refers to the kinetic energy of randomly moving particles in a substance. Particles can have translational, rotational, and/or vibrational kinetic energy, depending on the state of matter. Temperature is a measure of the average kinetic energy of the particles in a substance. Heat is thermal energy that transfers into or out of a system. Heat can transfer by conduction, convection, or radiation. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/da734486-a3ad-441b-b84e-bc7e7136cc17_1280_720_base.png Thermal energy, temperature, and heat Thermal energy refers to the kinetic energy of randomly moving particles in a substance. Particles can have translational, rotational, and/or vibrational kinetic energy, depending on the state of matter. Temperature is a measure of the average kinetic energy of the particles in a substance. Heat is thermal energy that transfers into or out of a system. Heat can transfer by conduction, convection, or radiation. https://cdn.kastatic.org/ka-youtube-converted/-7Gl-yKF6Y4.mp4/-7Gl-yKF6Y4.mp4 692 Heat https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:thermochemistry/x2613d8165d88df5e:thermal-energy-and-equilibrium/e/understand-thermal-energy-and-equilibrium 2026-03-26T05:30:45.387289448Z Understand: thermal energy and equilibrium Check your understanding of thermal energy and thermal equilibrium in this set of free practice questions. Allen Ruch exercise https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:thermochemistry/x2613d8165d88df5e:thermal-energy-and-equilibrium/e/apply-thermal-energy-and-equilibrium 2025-10-29T10:01:05.554340407Z Apply: thermal energy and equilibrium Apply your understanding of thermal energy and thermal equilibrium in this set of free practice questions. Allen Ruch exercise https://www.khanacademy.org/science/ms-chemistry/xc370bc422b7f75fc:thermal-energy-and-heat/xc370bc422b7f75fc:temperature-and-heat/e/apply-temperature-and-heat 2026-01-20T17:30:39.721394397Z Apply: temperature and heat Apply your understanding of temperature and heat in this set of free, standards-aligned practice questions. Allen Ruch exercise https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:thermodynamics/x0e2f5a2c:thermal-energy-and-thermal-equilibrium/e/understand-thermodynamics 2025-03-12T14:20:10.072734823Z Understand: thermodynamics Check your understanding of thermodynamics in this set of free practice questions aligned to NGSS standards. exercise https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:thermodynamics/x0e2f5a2c:thermal-energy-and-thermal-equilibrium/e/apply-thermodynamics 2025-03-12T14:20:10.072734823Z Apply: thermodynamics Apply your understanding of thermodynamics in this set of free practice questions aligned to NGSS standards. exercise https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:thermodynamics/x2eef969c74e0d802:heat-capacity-and-calorimetry/v/heat-capacity 2022-10-05T02:43:18.611402953Z Heat capacity Heat capacity is the amount of heat required to change the temperature of a given amount of matter by 1°C. The heat capacity of 1 gram of a substance is called its specific heat capacity (or specific heat), while the heat capacity of 1 mole of a substance is called its molar heat capacity. The amount of heat gained or lost by a sample (q) can be calculated using the equation q = mcΔT, where m is the mass of the sample, c is the specific heat, and ΔT is the temperature change. Jay video https://cdn.kastatic.org/ka_thumbnails_cache/e8a1f474-0c6a-43c3-a536-b855e458d405_1280_720_base.png Heat capacity Heat capacity is the amount of heat required to change the temperature of a given amount of matter by 1°C. The heat capacity of 1 gram of a substance is called its specific heat capacity (or specific heat), while the heat capacity of 1 mole of a substance is called its molar heat capacity. The amount of heat gained or lost by a sample (q) can be calculated using the equation q = mcΔT, where m is the mass of the sample, c is the specific heat, and ΔT is the temperature change. https://cdn.kastatic.org/ka-youtube-converted/QlusUNM1ehA.mp4/QlusUNM1ehA.mp4 521 Heat https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:thermochemistry/x2613d8165d88df5e:heat-capacity/v/specific_heat_capacity 2024-07-26T12:33:58.236331182Z Specific heat capacity If the same amount of heat flows into (or out of) equal masses of different substances, their temperatures may not change by the same amount. Specific heat capacity (c) tells us how much heat energy is required to change one unit mass of a substance by one unit of temperature. Specific heat is related to heat (q), the mass of the sample (m), and the change in temperature (∆T) by the equation q=cm∆T. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/8884da4b-d778-4863-be9f-828026d5c223_1280_720_base.png Specific heat capacity If the same amount of heat flows into (or out of) equal masses of different substances, their temperatures may not change by the same amount. Specific heat capacity (c) tells us how much heat energy is required to change one unit mass of a substance by one unit of temperature. Specific heat is related to heat (q), the mass of the sample (m), and the change in temperature (∆T) by the equation q=cm∆T. https://cdn.kastatic.org/ka-youtube-converted/GNelfJ6IAJw.mp4/GNelfJ6IAJw.mp4 828 Heat https://www.khanacademy.org/science/chemistry/states-of-matter-and-intermolecular-forces/states-of-matter/v/specific-heat-and-latent-leat-of-fusion-and-vaporization-2 2021-01-04T18:35:20Z Specific heat and latent heat of fusion and vaporization Defining specific heat, heat of fusion, and heat of vaporization. How to calculate the amount of heat to change the temperature of water and the energy required to change for a phase change.  David SantoPietro video https://cdn.kastatic.org/googleusercontent/EoJKriLCVHC5RIlLzeIMyJCOBrnLWnpttzxDUgjLMvtkTddPUqNW3DULUwbd-ZzCGg5-yTay-SlsWhJxlDIdmDM Specific heat and latent heat of fusion and vaporization Defining specific heat, heat of fusion, and heat of vaporization. How to calculate the amount of heat to change the temperature of water and the energy required to change for a phase change.  https://cdn.kastatic.org/ka-youtube-converted/WU7TfO-iaK8.mp4/WU7TfO-iaK8.mp4 897 Heat https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:thermochemistry/x2613d8165d88df5e:heat-capacity/e/apply-specific-heat-capacity 2026-03-02T06:20:38.576309557Z Apply: specific heat capacity Apply your understanding of specific heat capacity in this set of free practice questions. Allen Ruch exercise https://www.khanacademy.org/science/in-in-class11th-physics/in-in-thermal-properties-of-matter/in-in-thermal-expansion-in-fluids/v/anomalous-expansion-of-water-class-11-india-physics-khan-academy 2020-10-20T15:14:00Z Anomalous expansion of water Why does ice float on water? You may already know that ice is less dense than water, but why? Usually, solids are denser than liquids. In this video, we will explore the Anomalous expansion of water, and understand what makes ice less dense than water. We also look at some other consequences of this phenomenon. Created by Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/pJdfDml0uhq-vorKpRCibT6MGe5jlOHexWBu6uknXqpSlgiVo_IFJePtds2c90eHsI2LT-cpDcdtx9GL0h4kW3Q Anomalous expansion of water Why does ice float on water? You may already know that ice is less dense than water, but why? Usually, solids are denser than liquids. In this video, we will explore the Anomalous expansion of water, and understand what makes ice less dense than water. We also look at some other consequences of this phenomenon. Created by Mahesh Shenoy https://cdn.kastatic.org/ka-youtube-converted/adUU1AsWwVI.mp4/adUU1AsWwVI.mp4 605 Heat https://www.khanacademy.org/science/in-in-class11th-physics/in-in-thermal-properties-of-matter/in-in-thermal-expansion-in-fluids/e/anomalous-expansion-of-water 2026-04-08T01:15:04.085520103Z Anomalous expansion of water Let's solve some problems to better understand the anomalous behavior of water when it expands. Aakash Bagga exercise