Acids Bases and Salts

Curd, lemon juice, orange juice and vinegar taste sour because they contain ____________

The word acid comes from the ________ word _________ which means __________

Substances which taste bitter and feel soapy on touching are known as

Special type of substances are used to test whether a substance is acidic or basic. These substances are known as __________

The most commonly used natural indicator is _________ it is extracted from_________

The solutions which do not change colour of either red or blue litmus are known as __________ solutions.

china rose indicator turns acidic solutions to_________

china rose indicator turns basic solutions to _________

when a solution is basic phenolphthalein gives a _________ colour.

Phenolphthalein remains __________ when a solution is acidic.