wat is sand specific scince name?

Answer 1

The name is sand. You can have sand made out of a number of substances, such as quartz or coral. As long as the particles are too large to be silt and too small to be gravel, what you have is called sand.

Answer 2

There is a spell checker, you know.

You don't specify what kind of sand. So I will say quartz sand, which is primarily SiO2.