... litmus paper turns red in acidic solutions and blue in alkaline solutions. There are three theories that identify a singular characteristic which defines an acid and a base: the Arrhenius theory, for which the Swedish chemist Svante Arrhenius was awarded the 1903 Nobel Prize in chemistry; the BrÖnsted-Lowry, or proton donor, theory, advanced in 1923; and the Lewis, or electron-pair ... ...

• Word Count: 581
• Approx Pages: 2
• Grade Level: High School

Arrhenius acids and bases make up a class of compounds, which include many of many of our most common compounds and laboratory reagents. Acids are substances that reacts with water to produce hydronium ion, H3O+, and bases are substances that produces hydroxide ion, OH-, in water. One comes in conta...

• Word Count: 1211
• Approx Pages: 5
• Grade Level: High School