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Since limestone is predominantly composed of calcium carbonate (CaCO3), it is soluble in acid (or when crushed soluble in water) and is an alkali. Also it makes good lime for the garden, when heated properly it makes good portland for concrete, and is used in toothpaste and antacids.

For information on the material properties of limestone, such as strength, stiffness and density, please see the related questions.

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14y ago
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9y ago

The chemical formula of chalk is CaCO3 which is a form of calcium chloride. It is actually a form of limestone, which is a soft mineral.

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9y ago

A piece of chalk has a hardness of one. A human fingernail has a hardness of and a penny has a hardness of 3.5.

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9y ago

Limestone is a type of rock that is commonly composed of coral or other marine life. It consists of mainly silica and clay.

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13y ago
some physical properties are...
1. usually white
2. powdery
3. fairly easy to break
4. soft
5. you might be able to carve it
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13y ago

Limestone, calcium carbonate (CaCO3) more specifically.

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10y ago

Chalk can be any color.

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15y ago

* * *

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Q: What is the physical appearance of chalk?
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Is crushing a piece of chalk a chemical change or a physical change?

Crushing a piece of chalk is only a physical change. Chemically, it is still chalk.


Is a chalk grinding a physical change?

It doesn't matter if something is reversible or irreversible. it will not depend if it is a chemical or physical change. A physical change is when the composition of a substance remains unaltered (the particles stay the same) and no new substance is produced. Such as when you make a paper plane out of paper, the appearance changed, the particles stayed the same, no new substance was created, and the paper remains paper. A chemical change is when the composition of a substance is altered and a new substance is produced. Such as when paper is burned, the new substance produced is the carbon and other gases from the fire, and the composition of the paper changes, slowly disappearing.It usually is unless you draw so rapidly that the heat of the friction heats the paper and causes it to smoke.


When chalk is crushed is it a physical or chemical property?

I would say it is a physical change the chalk is being reduced to a smaller size. It still remains chalk.


What kind change is grinding chalk into powder?

Grinding chalk really doesn't change the chalk except to make it into powder. So that makes it a physical change. It is much like ice melting into water.


Is a piece of chalk crushed a physical change?

It is a physical change.


Is appearance a physical property or chemical property?

Appearance is a physical property.


If chalk doesn't dissolve in water is it a chemical or physical change?

physical


Is mixing chalk with water a physical change or chemical change?

physical :)


What is the physical property of chalk?

Soft & brittle.


Why does physical appearance is helpful in perception?

a physical appearance is helpful in a perception


Is pulverized chalk a physical or chemical change?

Grinding chalk to chalk dust is a physical change because the texture and size may change but the its molecules are still the same.An example of chemical change is burning paper because ash is chemically different from paper.


What is the physical appearance of a living thing?

traits are the physical appearance of a living thing.