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These are chemical reactions (changes).
What else can I help you with?
Is bleaching a sheet and a pillowcase phisycal or chemical change?
If the sheet is turning into a pillowcase, it would be a physical change. The sheet is not changing anything but its shape to become a pillowcase, and it most likely can be reversed to turn back into a sheet.
Is bleaching your hair a physical change or a chemical change?
It is both a physical and chemical change.
Is bleaching skin a physical or chemical change?
Bleaching skin is a chemical change because it involves a reaction with the skin's melanin pigment that alters its chemical structure to appear lighter in color.
Is bleaching your hair physical or chemical property?
Bleaching your hair is a chemical process, not a physical property. The chemicals in hair bleach work to break down the natural pigments in your hair, resulting in a lighter color. This change is due to a chemical reaction rather than a physical characteristic of the hair itself.
Is bleaching your hair Is a rusting bicycle a physical or chemical change?
first physical, second chemical
Is bleaching tiles a chemical change?
Bleaching your hair is a chemical change. The bleach reacts in hair, removing the color in an irreversible chemical reaction. There is no way to reverse the bleaching. Bleaching your hair also makes a new substance, when you do bleach your hair it is permanent.
Is bleaching a stain out of a article clothing a chemical change or a physical change?
Bleaching is done by oxidising chemicals like hypochlorite (bleaching powder) or peroxides. So it is a chemical change(called reaction): the stain is not (only) dissolved, but (rather) broken down to colorless molecules.Additions to this answer are on the discussion area.
Do dying a cloth is what example of physical or chemical change?
There is a bit of both. The processes of spinning and weaving are purely physical. Bleaching and dyeing are chemical.
Is bleaching hair chemical or physical?
Bleaching hair is a chemical process. It involves the use of chemical compounds, like hydrogen peroxide, to break down and remove the natural pigment in the hair shaft. This changes the hair color by lightening it.
Is bleaching hair a physical change or chemical change?
when you bleach your hair it is a chemical change,because you are adding the chemical from the bleach to your hair and "you can't change it back to the old". chemical change: you can't change it back to the old and it makes a new subtance. physical change:it does not make a new subtance and it is still the same object.
Is bleaching a chemical or physical change?
It is a pbysical change because its still the same thing. For example if i take a person named Tyler and paint his nails black and a black trench coat on, and dye his hair purple and cut it into a mohak, its still same old Tyler! Do u get it?
Is making paper from wood a chemical or physical change?
Papermaking is not one single unit operation but a series of operations some of them such as pulping and bleaching etc. are chemical change while sheet formation, pressing, drying etc. are physical change.
