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Which or what is the hardest steel chalk soap wood rubber diamond or plastic?

Diamond is the hardest.


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.


What the pencil eraser made out of?

Plastic or rubberIt is made out of rubber.


Why can a diamond scratch chalk?

No. Hardness is measured on the Mohs Scale, named after German Friedrich Mohs. On this scale Talc (the softest) measures 1, while Diamond (the hardest) measures 10. Glass has a Mohs' scale hardness of around 5.5, so anything above that will have the ability to scratch glass. For example, quartz (Mohs 7), hardened steel (Mohs 8), corundum (rubies and sapphires, Mohs 9),or diamond (Mohs 10). The Mohs scale is purely an ordinal scale, expressing relative hardness in a simplistic way. Carborundum (Mohs 9) is twice as hard as Topaz (Mohs 8), but diamond (Mohs 10) is four times harder than arborundum.


Can a rubber band a piece of chalk or a skirt be more easily broken?

A rubber band would be more easily broken than a piece of chalk or a skirt. Rubber bands are designed to stretch and be flexible, making them more likely to break when stretched beyond their limits. A piece of chalk is more rigid and a skirt is made of fabric, which are not as easily broken by stretching or bending.


Why will chalk dust on a plastic sheet placed over a bar magnet not show the shape of the magnetic field?

Chalk dust (calcium carbonate) is not magnetisable.


What are the materials needed in baseball?

Materials used in playing baseball include chalk, plastic, wood, leather, metal, and rubber. The chalk is used to mark the various lines on the field, the plastic is used in helmets, wood is used in the bats, leather is used in gloves and cleats, metal is used for the cleat spikes, and rubber is used for the bases.


Which has more force of attraction an iron nail a piece of chalk and a rubber band?

The iron nail has the greatest force of attraction due to its magnetic properties, followed by the piece of chalk which has minimal attraction, and the rubber band has the least as it is non-magnetic and non-conductive.


Why does a piece of chalk wear out as it is used on a blackboard?

With every stroke of the chalk piece it leaves some of the chalk on the board. This abrasion of the piece of chalk causes it to wear down. This is similar to why the rubber tyres of cars wear down when they are driven over a road surface.


What are 15 examples of insoluble substances in water?

OilSandPencilWoodGoldSilverPhosphateFluorideChromates (Examples: PbCrO4, BaCrO4)Metal hydroxideMarbleGlassPlasticSodium hydroxideCalcium hydroxide.


What are chalkboard erasers made out of?

the outer part is made out of a type of plastic and the outer part the wipes the chalk off is a cloth


What is the rock that makes up white cliffs of dover?

chalk