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Magnetisation and demagnetisation are considered physical changes because they involve a change in the arrangement of magnetic domains within a material without altering its chemical composition. When a material is magnetised, its magnetic domains align in a particular direction, while demagnetisation causes them to return to a random orientation. These processes do not involve any chemical reactions or formation of new substances, reinforcing their classification as physical changes.
What else can I help you with?
Is it a physical change chemical change when salt dissolves in water?
Physical
Which is A change in size shape or state of matter?
a change in size, shape or the state of matter is a physical change. True for A+.
Is carving plastic a physical change or chemical change?
physical change
Is volume a physical or a chemical change?
Volume is a physical quantity not a change. However CHANGE in volume is a physical change.
Is cutting a paper physical or chemical change?
It is a physical change because it is still a sheet of paper.
Is crumple a chemical change or physical change?
Crumple is a physical change.
How do you determine if the motor starters are properly earthed?
by magnetisation of no voltage coil
Is it a physical change chemical change when salt dissolves in water?
Physical
Which is A change in size shape or state of matter?
a change in size, shape or the state of matter is a physical change. True for A+.
Is carving plastic a physical change or chemical change?
physical change
Is mowing the lawn a chemical change or physical change?
I Physical Change.
Is volume a physical or a chemical change?
Volume is a physical quantity not a change. However CHANGE in volume is a physical change.
Is recycling paper an example of a physical or chemical change?
physical change physical change
What is reversal of magnetisation of steel core?
look up motor polling on the net.
Is magnetisation the same as magnetism?
Magnetization is the process of inducing magnetism in a paramagnetic metal.
Is painting a door a physical or chemical change?
Physical change of the paint, not the door.
When sandpaper smooths a piece of wood what kind of change is it?
this is a physical change
