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Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. Learn the examples, categories, and contrast with chemical changes, and how to distinguish physical and chemical changes.
Oct 19, 2023 · A physical change is a change in properties such as texture, shape, or state, while a chemical change is a change in composition that produces a new substance. Learn how to identify physical and chemical changes with examples, indicators, and exceptions.
Learn the difference between physical and chemical changes based on the changes in molecular bonds and properties. See examples, definitions, and video explanations with questions and comments.
- 7 min
- Sal Khan
- *Isn't everything always changing all the time?*Well if you define 'changing' as reacting in chemical reactions or undergoing physical state transitions, then no, there certain chemicals which do...
- Physical and chemical processes can be classified by the changes occurring on the molecular level. I...This belongs in the tips and thanks section :)
- Physical and chemical processes can be classified by the changes occurring on the molecular level. I...This isn't a question, it belongs in tips and thanks instead.
- I dont get thus..Can anyone explain this in a little easier form?help me understand how to identify a physical and chemical change
- How is heat physical change? 0:53, heat doesn't change it stays hot.A physical change is characterized by its effects on the intermolecular bonds between molecules. In this case, the heat results in the molecules ga...
- How do we know the difference between physical changes and chemical changesVery simply, chemical changes result in the starting chemicals changing into new chemicals. While physical changes do not see a change in the ident...
Jul 21, 2020 · A physical change is a change in the form of matter, not its chemical composition. It affects physical properties, such as color, size, shape, or temperature, but not chemical properties. Examples of physical changes are melting, freezing, evaporating, sublimating, heating, mixing, and more. Learn how to identify and distinguish physical changes from chemical changes.
Jan 17, 2019 · A physical change is a change in matter that alters its form but not its chemical identity. Learn how to identify physical changes and see examples, such as melting, boiling, and sublimation.
Sep 20, 2022 · A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not. A physical change can be reversible where the original form of the matter can be restored, or irreversible where the original form cannot be restored.
