A temperature change can be seen both in physical and chemical changes.
Change in Color.
You think probable to phenolphthalein used as a pH indicator.
This is a physical change. There is nothing that changes the components of either the diamond or the glass when the diamond is used to scratch glass.
This is a physical process.
It is a physical process. Not really a change of any kind.
Starch is not the indicator. Iodine is the indicator of starch.
a computer is a chemical change as it is a machine.
state
A chemical indicator works by changing color in response to a change in the chemical environment, such as a change in pH. This color change provides a visual clue about the presence or absence of a particular substance or a specific condition. Chemical indicators are often used in laboratory experiments to monitor reactions or in various applications such as pH testing.
---- indicators are substances which change their colour when treated with acidic or basic solutions this reaction of changing their colour is known as indicator reaction ---- ----
A plate dropping and shattering is a physical change. It is not a chemical change, as the material used in making the plate doesn't change.
Weathering is the term used to describe the reduction in the size of a rock by chemical or physical means.