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Who invented Chalk?
3
Who invented Chalk?
James Pillans!
How does chalk infect humans negatively
How is one way you would change this product?
Its a messy disaster, may cause lacrimination and breathing troubles
One way we would change this product is make it less messy by maybe adding a cover the detracts as you waste or write with the chalk and turn it into a pencil sort of design to help write with it easier
How is chalk made?
Extruded chalk is made by stirring calcium carbonate, color pigment, clay and a binding agent to form a doughy material, which is then pressed into cylindrical shapes and cut into sticks of chalk. This type of chalk is dustless, meaning that the dust doesn't travel through the air. It is typically used as blackboard chalk.
When was it invented?
What is chalk used for?
Is Chalk Harmful to our health?
Although messy it is not harmful to humans, but is harmful for a dog's health.
Surprisingly enough chalk has been around since ancient egyptian times and is still used to this day.
Most of the chalk used today, particularly the type used for sidewalk art, is made from dyed and formed gypsum.
Was the purpose of chalk?
How has chalk negatively imapacted society?
What is Chalk made of?
It is made of calcium carbonate
It was origanlly invented to write on black boards
one of the negative ways was that it can cause breathing problems.
(CaCO3)
How has this product impacted society in a positive way?
It has impacted postively by allowing us to write on surfaces that we could not write on with normal utensils