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Answer:

An acid is any substance that in water solution tastes sour, changes blue litmus paper to red, reacts with some metals to liberate hydrogen, reacts with bases to form salts, and promotes chemical reactions (acid catalysis).

Explanation:

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roshusharma4

Answer:

Acid is sour, turns blue litmus red, has more ph, ex. hcl . Acid is dangerous. When added to a base makes a salt