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.
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.
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.
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.
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.
CaCl2.Ca(OH)2.H2O Bleaching powder is Calcium hypochlorite & the basic chloride
Bleaching tiles is primarily a chemical change. This process involves the application of bleach, which reacts with stains and discoloration on the tiles, breaking down the compounds causing the discoloration. Unlike a physical change, which only alters the appearance without changing the chemical composition, bleaching results in new substances being formed as the original stains are chemically altered.
It is both a physical and 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.
These are chemical reactions (changes).
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.
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.
first physical, second chemical
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.
Bleaching is a chemical reaction.
Yes, because it changes the composition of molecules in the hair.
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.
The chemical formula for bleaching powder is Ca(ClO)2 -Calcium Hypochlorite.