Talc and chalk are not the same. Talc is a mineral composed mainly of hydrated magnesium silicate, known for its softness and lubricating properties. Chalk, on the other hand, is a soft, white, porous form of limestone composed mainly of calcium carbonate, commonly used for writing or drawing.
Yes. You might wish to verify this using the wikipedia article about talc.
Talc is a common mineral; it is a very known material, not expensive.
No, talc and quartz are not the same thing. Talc is a mineral composed of hydrated magnesium silicate, known for its softness, while quartz is a mineral composed of silicon dioxide, known for its hardness. Each mineral has different physical and chemical properties.
Talk about Talc!
A penny has a Mohs hardness of around 3.5. This means that it can be scratched by harder materials like glass or quartz, but it can scratch softer materials such as chalk or talc.
Yes. You might wish to verify this using the wikipedia article about talc.
In most compact powders the main ingredient is talc. Talc is hydrated magnesium silicate. Some compact powders can contain types of clay or chalk as well as talc.
yes they do, to help the chalk adhere and provide a good grip while also protecting the skin on their palms.
Talc is a common mineral; it is a very known material, not expensive.
Talk about talc!
It can be rough or smooth. If it is more broad-grained (granular), it will feel rough to you, but it can be very fine-grained, such as when it is in the form we call alabaster, and that will feel very smooth. You can also smooth out a rough piece of gypsum by polishing it.
It is pretty much the same. Chalk and limestone are made of the same elements, but to to make chalk they change the limestone a bit. First they change the shape and then make it smooth. I hope that helps!
yes it sinks because it doesn't have air inside so it doesn't float
No, talc and quartz are not the same thing. Talc is a mineral composed of hydrated magnesium silicate, known for its softness, while quartz is a mineral composed of silicon dioxide, known for its hardness. Each mineral has different physical and chemical properties.
Talk about Talc!
A penny has a Mohs hardness of around 3.5. This means that it can be scratched by harder materials like glass or quartz, but it can scratch softer materials such as chalk or talc.
No. Blackboard chalk is calcium sulfate, also known as gypsum. Cliff chalk is calcium carbonate, also known as calcite or limestone.