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What else can I help you with?
What is the hardness of chalk?
There are a couple of things that make chalk hard. The calcium in chalk is said to make chalk hard.
Is chalk harder than rubber?
Chalk is harder than rubber. Chalk is a form of limestone made of calcium carbonate, which is a relatively hard mineral, whereas rubber is a soft and flexible material typically made from natural or synthetic polymers.
Is the chalk you find in nature the same as the chalk that you use on the board?
No, natural chalk found in nature is formed from the shells of marine organisms, while chalk used on chalkboards is typically made from gypsum or calcium sulfate. The chalkboard chalk is designed to have a smooth texture and be easily erased from chalkboards.
Why can you use chalk to write on the blackboard but not granite?
Chalk is softer than the slate (real or artificial) used on blackboards, so it will flake off as you write. Granite is harder than slate and will not flake, but rather cut into or mark the slate permanently.
Water from an area has a limestone and chalk strata is most likely to be?
clodudy
Why is chalk good for writing on hard surfaces?
because it is soft,rough,white and is shown clearly when writing
A hard tablet used for writing with chalk?
slate
A hard tablet used for writing on with chalk is called?
Slate
Add one letter: a hard tablet used for writing on with chalk?
help me pls
What kind of rock or hard surface to write on?
You can write on rocks or hard surfaces like slate, granite, or concrete using a variety of tools such as chalk, charcoal, or markers specifically designed for use on these surfaces. Using a flat, smooth rock or surface will provide the best results for writing. Avoid using sharp objects that can scratch the surface.
What is the difference between chalk and coal?
Chalk is a soft, sedimentary rock composed primarily of calcium carbonate, used for writing and drawing. Coal is a hard, dark, combustible rock formed from decayed plant matter, used as a fuel source. chalk is used for writing and coal is used for energy production.
What is the hardness of chalk?
There are a couple of things that make chalk hard. The calcium in chalk is said to make chalk hard.
Is engineering hard if you are good at math but not at writing?
No it is not
Why won't chalk write on your new blackboard does it need conditoning before use?
The problem likely lies with the chalk itself. A lot of chalk you buy today, especially cheap chalk, is too hard to use on chalkboards with any kind of good result. Try a different brand of chalk, one that is softer.
1. the chalk is hard.2. wood is____than chalk.3.stonr is the_____among the all?
2.hard 3.harder
What materials are used to make a chalkboard?
Chalkboards are typically made using a smooth, hard surface material such as slate or a specially coated wood panel. The surface is then treated with a layer of chalkboard paint to create a writable surface for chalk.
Is the rock 'chalk' hard or smooth?
It can be both
