Because during painting the chemical structure of the dyes (the chemical formula of the molecule) remain generally unchanged.
Painting a door is a physical change because the appearance of the door was changed. It is not a chemical change because it didn't chance its composition. After painting the door it still remained a door, just a different color.
physical
Physical change of the paint, not the door.
Its a physical change
Paneling a room, or in other words applying wood panels to the walls of a room in order to modify the look and feel of the room, would be a physical change and not a chemical change because you are changing the physical properties of the room and not the chemical composition of the room.
this is a physical change
A physical change
Painting a door is a physical change because the appearance of the door was changed. It is not a chemical change because it didn't chance its composition. After painting the door it still remained a door, just a different color.
Physical change of the paint, not the door.
Its a physical change
No.
it is a physical change.
Physical - because you're changing the appearance - not the composition of the wall.
Paneling a room, or in other words applying wood panels to the walls of a room in order to modify the look and feel of the room, would be a physical change and not a chemical change because you are changing the physical properties of the room and not the chemical composition of the room.
Chemical Changes the substance and physical really dont change it as much examples of chemical: burning wood, physical: painting it Physical is basically changing color, looks,
Paniting a wall is a physical change because it is the same wall but a different color
The door was cut into the painting in 1652. At the time, the painting was unrecognizable, and the door has since been bricked up. Exactly who cut the door is not known.
I guess it could be chemical, but really- it's a physical change
Both, strangely enough. Applying the paint to the car is a physical change. The paint is a polyurethane compound. When you get it, it's in at least two containers - the paint, and a hardener. Stir them together and they undergo a chemical change.