For ten points, name these compounds, valued for the color change they experience when bound to hydrogen or hydroxide ions.
Natural ones include beets, curry powder, and strawberries, but the more commonly used of these color-changing chemical compounds include malachite green and phenol red. They are usually weak acids or bases and can be used to determine the extent of a specific chemical reaction. For ten points, name these compounds, valued for the color change they experience when bound to hydrogen or hydroxide ions.
Natural ones include beets, curry powder, and strawberries, but the more commonly used of these color-changing chemical compounds include malachite green and phenol red.
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