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Changes of state are examples of phase changes, or phase transitions. All phase changes are accompanied by changes in the energy of a system. Changes from a more-ordered state to a less-ordered state (such as a liquid to a gas) are endothermic.
30 de mar. de 2022 · There are four main changes of state: melting, freezing, evaporating and condensing. Did you know? Liquids do not have to be heated to their boiling point to evaporate - evaporation can...
9 de ago. de 2021 · Learn what the changes of state are and how matter can change from a gas to a liquid. This KS3 Chemistry guide helps you revise all of this and more.
8.15: Changes of State. Page ID. Learning Objectives. Define enthalpy of fusion and enthalpy of vaporization. Calculate the energy changes that accompany phase changes. Interpret heating and cooling curves.
Solid, liquid, and gas — these are the basic three states, or phases, in which the majority of small-molecule substances can exist. At most combinations of pressure and temperature, only one of these phases will be favored; this is the phase that is most thermodynamically stable under these conditions.
Learn about the basic states of matter and how they change with temperature and pressure in this interactive simulation. Experiment with different types of atoms and molecules and observe their behavior in different phases. Compare the properties of solids, liquids and gases and discover how they relate to the atomic bonding and motion.
Explore the four states of matter with this interactive simulation from PhET. Learn how atoms and molecules behave differently in solids, liquids, gases and plasmas. Adjust the temperature and see how the phase transitions occur. Compare the properties of different substances and discover the role of intermolecular forces.
