Evaporation, Condensation, Melting and Freezing are all physical changes as only the state of matter is changing, rather than the chemical properties.
the phases can be changed from a liquid, gas, or solid
Water because It is first solid its ice then when it melts it is liquid and when it is a gas its water vapor.
Examples of physical changes include melting of ice, boiling of water, cutting a piece of paper, breaking a glass, and dissolving salt in water. These changes alter the form or appearance of a substance without changing its chemical composition.
Physical properties describe characteristics of a substance that do not involve a change in its chemical composition, such as color or density. Physical changes, on the other hand, refer to alterations in the substance's physical state, like melting or boiling.
Scientists use a variety of methods, such as microscopy, spectroscopy, chromatography, and mass spectrometry, to identify physical changes in materials. These techniques help scientists observe changes in the size, shape, structure, composition, or properties of a substance, allowing them to understand how physical changes occur at a molecular level.
-Solid -liquid -gas
Physical Changes
what is marijuana physical changes
nuclear changes physical '' chemical ''
There are no physical changes. there are only chemical changes.
Reversible changes and physical changes are not exactly the same. Reversible changes can be undone and the original substance can be recovered, while physical changes alter the appearance or state of a substance without changing its chemical composition. Physical changes are usually reversible, but not all reversible changes are physical changes.
physical or chemical changes
Physical changes in a substance result in
Not all chemical changes are accompanied by a visible physical change. Most chemical changes however will be accompanied by a physical change.
its physical changes
Burning
Melting and boiling are physical changes.