-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
change in the form -in general can be indicated for the physical form. The substance may dissolve or its stage may change. If the change is physical, it should be reversable.
Not all chemical changes are accompanied by a visible physical change. Most chemical changes however will be accompanied by a physical change.
Burning
its physical changes
Melting and boiling are physical changes.