The tooth is rotting so it is changing its nature due to the influence of bacteria or the acid secreted by bacteria. If the new material is no longer dentine but the byproducts of decay then it is a chemical change.
If the tooth breaks then that is a physical change.
Physical
a change in size, shape or the state of matter is a physical change. True for A+.
Volume is a physical quantity not a change. However CHANGE in volume is a physical change.
physical change
It is a physical change because it is still a sheet of paper.
chemical
Crumple is a physical change.
Physical
a change in size, shape or the state of matter is a physical change. True for A+.
Volume is a physical quantity not a change. However CHANGE in volume is a physical change.
I Physical Change.
physical change
Physical change of the paint, not the door.
physical change physical change
this is a physical change
Origami is a physical change because it involves the folding and manipulation of paper without altering its chemical composition.
The diaphragm separates the chest from the abdomen and pelvis