acid

  

Definition

Acids in solution have a pH below 7.0, a sour taste, releases hydroxyl ions in water, and turn litmus paper red. Acids are divided into two main classes: (1) Strong acids are very corrosive and cause severe skin burns, examples are hydrochloric acid, nitric acid, and sulfuric acid. Also called mineral or inorganic acids. (2) Weak acids are mildly corrosive and normally do not affect skin, examples are acetic acid (vinegar), citric acid (citrus fruit juice acid), and tartaric acid (used in making mayonnaise). Also called natural or organic acids.

Use acid in a sentence

  • The CSI forensic scientist was able to use a specially-formulated acid to bring out the filed off serial number on the gun.

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  • When you put acid on most objects for long periods of time, it will begin to wear away at it.

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  • There is a growing alarm in the amount of acid in our rain that is leading to adverse health effects in both the short term and the long term in humans.

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