are you saying if the butter turning into a liguid a physical change? if so then yes for example water turning from water vapor (gas) to a liquid or solid is a physical change a chemical change actually changes the molecular structure of a compound or molecule, such as burning the toast in a fire and the wheat and other stuff in the toast is being converted along with oxygen in a combustion reaction into water, carbon dioxide, and other stuff like ash
Physical. It is still butter. It is still just a piece of bread. But now it is butter on a piece of bread with a bite out of it. The bread/butter is not chemically changing to form a TOTALLY new substance. For instance, when you melt butter its no longer a solid its now a liquid. Looks different, the temperature is different, and it may even taste diifferent but its still butter. But if you were to take sugar and dissolve it in water it becomes a totally different substance.
bread is a chemical change, not a physical change
Since it is the heat from the bread that causes the butter to change form (melt), and be absorbed by the bread, this should be classified as a chemical reaction.
Slicing bread is a physical change because it does not change the chemical composition of the bread.
It is a physical change
Slicing bread is a physical change, because each slice of bread has the same chemical composition as it had before it was sliced.
Cutting bread is a mechanical or physical change, not a chemical change.
It is a physical change
Physical cause it is still bread
Physical
No, slicing bread is a physical change. The act of cutting the bread into smaller pieces does not alter its chemical composition.
A physical change in food is a modification in its appearance, texture, or form without changing its chemical composition. Examples of physical changes in food include melting butter, freezing water, and chopping vegetables. These changes are reversible and do not create new substances.