Of course they do. Some examples are fizzing, when a gas is produced, colour changes, and the formation of precipitates.
Yes, because there is an unexpected colour change.
Can't say why or why not, because it sin't a reaction at all! Blue is a color, thus a physical substance(s) property
Bromine dissapear in this reaction !
An indicator reaction is a chemical reaction used to detect the presence of a particular substance or to monitor the progress of a reaction. It involves a change in color, pH, or some other physical property that indicates the presence or absence of the target substance. These reactions are often used in analytical chemistry and testing.
Red and blue makes purple. Adding black in the mixture darkens the purple while white lightens the purple. So slightly darkening the purple may give you the colour of orchid.
Nothing, but due to wetness it seems to be darkens.
Many people feel that purple is the international gay colour perhaps because it is a mixture of blue colour, for guys and pink, for girls.
Of course they do. Some examples are fizzing, when a gas is produced, colour changes, and the formation of precipitates.
Some jelly is purple because that is the colour of dye added to the mixture.
Yes, because there is an unexpected colour change.
Because orange is a mixture of red and yellow, its qualities would be red and yellow.
Many people feel that purple is the international gay colour perhaps because it is a mixture of blue colour, for guys and pink, for girls.
what colour change occurs during the calcium and hydrochloric acid reaction
The color will be a fairly strong red as it is a very strong acid in the pH scale.
Can't say why or why not, because it sin't a reaction at all! Blue is a color, thus a physical substance(s) property
The colour darkens, cheese dries out, becomes hard, mould eventually grows.