no. in order for a chemical change to take place the chemical make up of the paint would need to change, such as a color change. when you peel paint off a door you arent changing its chemical state.
No.
it is a mixture
It would be unusual to get lead poisoning from touching a door knob. In theory, if the door knob had been painted with a paint that contains lead, and if the paint was now flaking off and gets onto your hand, and if you fail to wash your hands before eating, and you get flakes of lead based paint into your food and eat it, then yes, you could get lead poisoning.
If all the components are made from pure copper - yes, all is from the chemical element copper.
most of the light is absorbed, particularly compared to a painted door
Physical change of the paint, not the door.
Take the door outside and use a chemical stripper.
No.
Because during painting the chemical structure of the dyes (the chemical formula of the molecule) remain generally unchanged.
heat gun,or paint remover...the first is chemical free
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.
Well you get your brush you dip it in the paint and then you stroke up and down with the brush on the door!
you first take off the nails and the hindges that hangs your door by the wall.. then you get big brushes and the colour of the paint that you want to change the door into...then you paint. After that, keep it dry for about an hour, put the liquid for coating (lamination) on, and they you dry it. then it's done!
The formation of rust is a chemical change because the steel (iron) in the door has reacted with oxygen in the air to form a new substance called rust, which has properties different from the iron and the oxygen that reacted.
The oxidation of the iron in a car door into iron oxide is a chemical change. The reaction equation is 4 Fe + 3 O2 = 2 Fe2O3
Go over the door lightly with 100 grit sandpaper. Apply a coat of interior/exterior primer. Then you can apply any paint you desire.
Use thinner for that paint.