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What substance is added to drinking water and most toothpastes to help harden tooth enamel?
Wiki User
∙ 13y ago
An amount of fluoride is added to drinking water during the purification to harden the tooth enamel.The fluoride is also present in toothpastes for the same purpose
Wiki User
∙ 13y ago
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How many minutes should you wait before brushing your teeth after drinking a glass of apple juice?
you should wait an hour, to enable the enamel to harden, as the sugar and acid in the juice will loosen the enamel if you brush straight away.
Can you buff enamel paint?
Yes, but it must be very dry and hard. So let it harden for a few weeks first.
What makes play doh harden?
They contain a substance called hardener.
The substance that makes bone harden?
Minerals like calcium and phosphorus :)
Can you put acrylic enamel over acrylic lacquer?
If the Enamel is an original baked finish there should be no problem. Many DIY touch up paints are made from Acrylic Lacquer. If however the enamel is air-dried then the solvents in the lacquer will react and cause the enamel to bubble and craze. Enamel paints become hard on the surface but stay soft underneath if not baked to harden them. The lacquer is able to penetrate this outer layer and react with the enamel paint.
What causes fingernails to be hard?
Keratin... it's a natural substance that makes the nail harden.
Which substance readily harden when mixed with water is lime or silica or plaster of Paris or granite?
silica
What do clay cliffs do after heavy rain?
They melt into mushy clay substance and remold into another shape and harden.
What is the present tense of harden?
The present tense of "harden" is "harden." For example, "The clay hardens as it dries."
What type of sand or material is used in kiln texturing?
Here is an excerpt from this site explaining kiln texturing:1. A method of making a mold with a textured mold surface comprising the steps of: coating a mold surface of the mold with a fusible inorganic enamel composition, then applying a particulate inorganic material to the unfused enamel composition coating, and heating the enamel composition to fix the particulate material in place thereon and to harden the enamel composition, then applying a second coating of inorganic enameling composition of thickness to the coated mold surface and particulate material so that the surface of the second coating reflects the texture of the hardened enamel composition with the particulate material fixed thereon. * http://www.freepatentsonline.com/4956200.html
Is harden a verb?
Yes, harden is a verb.
Is harden an adjective?
No. The word "harden" is a verb.
