Chalk, in both its natural and man-made form, is white in colour and is considered to be a fairly soft solid. Naturally, It comes from the ground where it is found as a porous (can hold water) sedimentary rock. It is a form of limestone and is composed of the mineral calcite.

There are three basic ways that rocks melt to form the lavas that erupt from volcanoes: decompression, addition of volatiles, and conduction.

Part of Hall of Planet Earth. There are three kinds of rock: igneous, sedimentary, and metamorphic. Igneous rocks form when molten rock (magma or lava) cools and solidifies.

Sidewalk chalk is typically made from calcium carbonate, which is non-toxic and considered reasonably safe for use by children. Pool chalk is typically composed of three different ingredients: aluminum oxide, crushed silica, and corundum.

Eating slate pencil can cause abdominal pain, nausea, vomiting, constipation, diarrhoea. Since it is made from the dust, it may cause eye irritation, and isn’t good for your lungs. Some kinds of chalk may contain toxic additives.

3-Rocks White Natural Slate Pencils, Pack of 10 pencil-Best Quality slate pencil, Can be used for eating (10 Sticks) writting skill slate pencil (10 Sticks)

It tastes wonderful, nice earthy taste. Only two were gritty, some were creamy and melted in your mouth, but the majority had an amazing crunch.

If symptoms do occur, they may include stomachache and vomiting, which could be from a bowel obstruction (blockage). The person may choke while swallowing the pencil. This can cause symptoms such as repeated coughing, chest pain, shortness of breath, or rapid breathing.