Ain) is a compound that changes color as the pH of a solution changes, thus showing the relative pH of the solution. indicator index acidometer hydrometer QUESTION 18 The name of the class of pigments in some plants that change color in different pH solutions is. carotenoids. acidosis. flavonoids: None of the above. QUESTION 19 Anthocyanins may have heath effects including .. decreasing platelet aggregation. antioxidant. anti-inflammatory: All of the above. QUESTION 20 Anthocyanins are found in. red cabbage. red hibiscus fowers Celestial Seasonings Red Zinger sea All of the above. QUESTION 21 It a solution containing anthocyanins turns bluegroen whon a sarphilicuid is added to ts a indcates that me sambie is If a solution containing anthocyanins turns blue/green when a sample/liquid is added to it, it indicates that the sample is... neutral. basic. acidic