Food coloring, and other dyes.
Soap does not turn water blue. It is likely that a blue-tinted soap was used, or that the soap contained a dye or pigment that resulted in the blue color when dissolved in the water.
No it does not.
When copper reacts with water, it forms copper hydroxide which has a blue color. This is why when copper objects such as pipes or fittings corrode, the water turns blue due to the presence of copper hydroxide in the water.
because when in a solution it forms blue crystals creating a blue colour
water
Blue, no. White, yes.
The litmus paper will turn blue if dipped in lime water, indicating that the lime water is basic. Lime water is a solution of calcium hydroxide, which is a strong base that can turn litmus paper blue.
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blue
Blue food coloring goes into the water. The white rose takes up water in the stem and turns blue.
Pink cobalt chloride paper will turn blue when exposed to water. Cobalt chloride is a chemical compound that changes color based on the amount of water present, with pink indicating a dry condition and blue indicating the presence of water.
The ocean did not turn different colors, the water has different hues depending on the environment and the animals or plants in the water. Also depends on the depth of the ocean floor the deeper it is the darker blue the water will look.