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color doesn't matter. it's just colored to match different felt colors. brands make the difference
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∙ 16y ago
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Why does a color decide to be the color it is?
The colour of the object we see is due to the light which it reflects. the difference in colours are due to the difference in wavelength and frequency of the light wave.
What is a chalk coastline?
A chalk coastline is a type of coastline characterized by cliffs made of chalk rock. These cliffs are typically white in color and are formed by the accumulation of marine sediments and the subsequent compaction and lithification of these sediments over time. Chalk coastlines are prone to erosion due to their soft nature.
How do you separate chalk water?
Due to the chemical composition of Chalk, you can separate it from water either by filtration of evaporation.
What is named for the Latin word for chalk?
The word "calcium" is named for the Latin word "calx," meaning chalk, due to its abundance in chalk deposits.
What is the difference between kaolinite to chalk?
Kaolinite is a clay mineral composed of aluminum, oxygen, and hydrogen, while chalk is a soft, white, porous sedimentary rock formed from the skeletal remains of marine organisms like plankton. Kaolinite is used in ceramics and paper-making due to its high plasticity, while chalk is commonly used in making cement and as a sedimentary rock.
Is a piece of chalk a conductor or an insulator?
A piece of chalk is an insulator. It does not conduct electricity due to its high resistance to the flow of electrical current.
How can you demonstrate that a piece of chalk has mass?
You can demonstrate that a piece of chalk has mass by weighing it on a scale. Place the chalk on the scale and observe the reading, which indicates the gravitational force acting on the chalk due to its mass. A non-zero reading confirms that the chalk has mass.
Why are bubbles formed when chalk is dipped in water?
Bubbles are formed when chalk is dipped in water due to the release of carbon dioxide gas. Chalk is made of calcium carbonate, which reacts with the water to produce carbon dioxide gas bubbles. This reaction is known as effervescence.
What is the difference in color in oxyhemoglobin and deoxyhemoglobin?
Oxyhemoglobin is bright red in color, while deoxyhemoglobin is darker, more bluish-red in color. This difference is due to the presence of oxygen in oxyhemoglobin, which gives it its bright red color.
Does chalk on a blackboard have an electrostatic charge?
Yes, chalk on a blackboard can acquire an electrostatic charge when written or moved on the surface, due to friction between the chalk and the board. This charge can attract or repel other objects nearby.
What happens to pieces of chalk when they are shaken in jar with pebbles?
When pieces of chalk are shaken in a jar with pebbles, they will break down into smaller pieces due to the abrasive action of the pebbles rubbing against them. This process is known as abrasion and will result in the chalk becoming smoother and rounder over time.
Why does the water get trapped in the chalk?
Water can get trapped in chalk due to its porous nature, which allows it to absorb and retain water. The spaces between the chalk particles act like tiny sponges, holding onto the water molecules.
