Chalk is a non-clastic carbonate sedimentary rock that is form of limestone compesed of the mineral calcite. It is soft, fine-grained and easily pulverized. Color is white-to-grayish variety of limestone rock. It is composed of the shells of such minute marine organisms as foraminifera, coccoliths, and rhabdoliths.

Sedimentary rocks are classified based on how they form and on the size of the sediments, if they are clastic. Clastic sedimentary rocks are formed from rock fragments, or clasts; chemical sedimentary rocks precipitate from fluids; and biochemical sedimentary rocks form as precipitation from living organisms.

Biochemical sedimentary rocks are formed from shells and bodies of underwater organisms. The living organisms extract chemical components from the water and use them to build shells and other body parts. The components include aragonite, a mineral similar to and commonly replaced by calcite, and silica.

They’re formed from the skeletal remains of minute planktonic green algae that lived floating in the upper levels of the ocean. When the algae died, their remains sank to the bottom of the ocean and combined with the remains of other creatures to form the chalk that shapes the cliffs today.

Limestone is a sedimentary rock composed mostly of calcite and aragonite, which are different crystal forms of calcium carbonate. Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. These rocks are composed of many distinct minerals.

Chalk’s main component is CaCO3 , calcium carbonate. The solubility of calcium carbonate is extremely low in water, so therefore an extremely minute amount of CaCO3 is able to dissolve in a normal amount of water. The rest would remain solid, classifying it as mostly insoluble in water.

Just add water…. The chalk will go on smoothly and be almost a little slippery. The color will be more vibrant and more opaque than if it were dry. It doesn’t take long for the water on the chalk to be used up.

Chalk doesnot dissolve in water. Chalk comprises CaCO3 which is insoluble in water because the forces of attraction between calcium and carbonate ions are stronger than ions of calcium carbonate and water.

Notice how quickly the vinegar dissolves the calcium carbonate and how much sediment is building up in the bottom of the glass. The chalk may completely dissolve within a few days.

Answer. Explanation: Chalk does not dissolve in Water. Only a minute amount of calcium carbonate can be dissolved in the water and rest will be remain solid .

1 Answer. The particles of matter have force acting between them. This force keeps the particles together. The strength of this force of attraction is lesser in chalk, hence it could be broken easily into smaller pieces.

When a stick of chalk, or any other rigid rod, is dropped on the floor, it usually bounces on one end rather than bouncing on both ends simultaneously. The initial impact has two effects. It causes the impact end to bounce vertically upward, and it generates a torque about the center of mass.

Answer: The answer of this question is due to molecular structure and bonding of molecules , In easy language if in a solid ,the molecules are not tightly packed then they will break easily and vice-versa.

Since in chalk the particles forces between the chalk particles are not so strong hence they can be easily broken up while the interparticle distance between the particles of iron is strong as there are strong metallic bonds between them. Hence they cannot be easily broken down.

It requires more force to break a cube of ice where as the iron nail does not break at all even with the large force. It is because the force of attraction which is present between the water particles keeps them together and don’t allow them to get separated.

The third group was easiest to break. They were holding each other with a very weak chain i.e. the attraction between each other was negligible.