Physical changes are ones which do not affect the chemical composition of a substance. For instance, if you cut a cake in half, that is a physical change. Nothing has changed except the shape, weight, and size of the cake. When you bake the cake batter, however, you are causing a chemical change. The batter changes into a cake; when you cut the cake, it doesn't change into anything.
Physical Changes
what is marijuana physical changes
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.
No. It is false. Physical changes are not accompanied by changes in color or odor.
There are many different physical changes that can take place at any given time. To know what exactly these certain physical changes mean we would need to know what the changes are.