Gilbert Newton Lewis

We frequently define an acid or a base as a substance whose aqueous solution gives, respectively, a higher concentration of hydrogen ion or of hydroxide ion than that furnished by pure water. This is a very one sided definition.

American Scientist

Hydroxide compounds are essential in various industries for making soap, paper, and cleaning agents.

Industrial Use

Hydroxide can be corrosive and dangerous, requiring careful handling and appropriate safety gear.

Safety Concerns

Hydroxide ions raise the pH and indicate that a solution is basic, as opposed to acidic.

pH Indicator

 red seaweed respectively okay so we are finally at the last three ingredients these don't really fit in the category all right so first there's sodium fluoride which is in almost every toothpaste manufacturer today and prevents cavities next up is sodium hydroxide which bumps

Toothpaste PIPE Ingredients...

 The resulting calcium hydroxide reacts with carbon dioxide in the air, starting a process called autogenous healing, where microscopic calcium carbonate crystals form and gradually fill the gap. Unfortunately, these crystals can only do so much, healing cracks