That's like asking why some people enjoy summer more than winter or why some people prefer Coke over Pepsi. We just are the way we are. Everyone has different sensory perceptions and preferences.
it is very soft and a very awesome thing when you r tired
Chalk-Like Drawing Stick
Pastel refers to the colors of the chalk. Pastels are soft colors like baby blue, baby pink and so on. Non-pastel colors are red, blue, green etc.
they feel like regular frogs
What paint will feel like depends on the state the paint is in. If the paint is still wet it will feel sticky and possibly runny. Dry paint will feel hard or possibly brittle depending on the surface it is on.
Chalk is made of calcium carbonate, a soft mineral that leaves a visible mark when drawn on a rough surface like a blackboard. When drawn on the blackboard, chalk particles rub off and stick to the surface due to friction, creating a visible line.
very different it was strict and you wrote on slate with chalk[mini blackboard with chalk]
Yes, both sidewalk chalk and blackboard chalk are typically made of calcium sulfate. However, sidewalk chalk is often mixed with additional ingredients like pigments and binding agents to make it more durable for outdoor use.
Well you see, as the chalk rubs against the blackboard bits of it get left behind, showing you what your teacher thinks your cursive should look like, or a new trick when dividing big numbers.
It is easy to write on a rough blackboard. The friction between the chalk and the rough surface is what allows the chalk to leave behind the chalk dust that we see. Actually it would impossible to write on a theoretically smooth blackboard. Without the friction, the chalk would not leave any residue!
No, thats just their name
rocky
Chalk dust is primarily made of calcium carbonate, a type of limestone composed mainly of calcite. It also contains small amounts of other minerals, such as quartz, clay, and mica. When chalk is used on a blackboard, the friction creates the dust that we see.
the closest i could find was "Mr. James Pillans is regarded as the inventor of the chalkboard (or blackboard). He was the Headmaster of a high school in Edinburgh, Scotland." he was using a chalk like substance on the boards but no one invented it someone just started writeing with it....
Chalk can be made using a combination of calcium carbonate (such as limestone or marble dust) mixed with a binding agent like gypsum or clay. This mixture is then shaped into sticks and allowed to dry and harden before use.
it is very soft and a very awesome thing when you r tired
look like a cylinder, cirgarette, stick. feel powdery, smooth, and hard