sprinkle water on it
To make sand harden, first you need water. Without water, sand is very soft, and soft sand is horrible for making sand castles or any sand sculptures. But if you pour water on sand, then leave it alone for a few hours, it should harden all by itself. But even though the sand is hardened, it is not unbreakeable, so be careful.
Chemical reaction of lime and dehydrated gypsum with water.
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
water particles slowing down to the point were they bond together and harden
yes it can. it will die if you want to put it. it will harden and die
The present tense of "harden" is "harden." For example, "The clay hardens as it dries."
Heat the metal red hot. To harden the metal, cool it quickly by dunking it into cold water. To get a soft metal, let it cool slowly.
Yes, harden is a verb.
No. The word "harden" is a verb.
"Harden" is the present tense. Ex. I harden the the cement by allowing it to dry. The past tense is hardened. The future tense is will harden.
it will harden in a hot temperature