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Q: Why is marble harder than chalk and limestone Kid?
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How does marble differ from limestone there than color?

Hardness, Elasticity, Porosity, Permeability, Density, resistance to diagenesis, conditions of formation. Generalities (this means that in general the following are true and rules don't follow the exception if any exist) Hardness: marble is harder than limestone. It has a higher compressive strength and cohesion. This can get much more technical so let's leave it at that. Elasticity: Young's Modulus, shear modulus of marble is higher. Bulk modulus and poisson's ratio of marble is lower. Porosity of marble is lower. Permeability of marble is lower. Density of marble is higher. Limestone is often altered via fluids and chemical underground and marble isn't. Marble is metamorphic rock and limestone in sedimentary. Marble and Limestone are spelled different.


Is marble harder than brass?

yes


What is chalk dust made of?

crushed limestone then it is pressurized so that it for like a solid rock but is not as rigid as a rock because you can write with it on a blackboard.


Explain Why blackboards are not scratched by chalk but by the sand embedded in the chalk?

Blackboards are not scratched by chalk because chalk is softer than the material from which the blackboard is constructed. Sand scratches blackboards because it is harder than the material from which a blackboard is made.


Why is powdered chalk more like a liquid than a lump of chalk is?

because it consists of small particles that are similar to liquid. Even if we add water to a powdered chalk, it dissolves easily whereas a lump of chalk is harder to dissolve in water.

Related questions

What is a form of calcium carbonate softer than marble but harder than chalk?

Limestone is softer than marble, but harder than chalk.


Is chalk harder than limestone?

No, Limestone is harder than chalk.


Why is marble more prone to acid rain than limestone and chalk?

it is becauce of the chemicals present in the acid rain which eats up marble.


Is marble hard or soft?

Marble is a very hard stone. Even though it is harder than limestone it is not as hard as granite.


Is chalk harder than rubber?

rubber is harder than chalk !


How does marble differ from limestone there than color?

Hardness, Elasticity, Porosity, Permeability, Density, resistance to diagenesis, conditions of formation. Generalities (this means that in general the following are true and rules don't follow the exception if any exist) Hardness: marble is harder than limestone. It has a higher compressive strength and cohesion. This can get much more technical so let's leave it at that. Elasticity: Young's Modulus, shear modulus of marble is higher. Bulk modulus and poisson's ratio of marble is lower. Porosity of marble is lower. Permeability of marble is lower. Density of marble is higher. Limestone is often altered via fluids and chemical underground and marble isn't. Marble is metamorphic rock and limestone in sedimentary. Marble and Limestone are spelled different.


Why can diamonds scratch chalk?

Diamonds are harder than chalk.


Why is marble better for building than limestone?

Bacon


Which rock is the hardest granite or chalk?

Chalk is a sedimentary rock composed primarily of Calcium Carbonate. Calcium carbonate is also the number one mineral at the Marble spec. Hardness of Chalk is around 3 Mohs. Granite stay at the number 7 at the Mohs scale and Granite is harder than Marble. Granite is mostly composed by feldspat (christal).


Is marble harder than basalt?

no


What is CaCO3 known as other than limestone?

CaCO3 is calcium carbonate. Its other mineral names are calcite, chalk, and marble.


Is granite harder than limestone?

Yes