yes, of course.
No, feldspar is not softer than pencil lead. Pencil lead, which is made of graphite, has a higher hardness on the Mohs scale compared to feldspar. Feldspar is typically around a 6 on the Mohs scale, while graphite is around 1-2.
A 7mm pencil lead is thicker than a 5mm pencil lead. The diameter of the lead determines its thickness, so the lead with a larger diameter will be thicker.
If lead pencils were the ONLY thing you ate, it would kill you in a lot less time than that. Pencils do contain some digestible fiber (in the wood), while the graphite "lead" doesn't provide much in the way of nutrition. The "lead" in a pencil is actually not the element lead, which can be toxic; it is graphite, which is powdered carbon. Eating one pencil "lead" is pointless, but harmless.
Pencil lead is actually not lead (Pb) at all, but it is graphite. And graphite is simply carbons atoms. So, no, it is NOT a compound mixture.
Silver is harder than gold but softer than copper.
The 'lead' or graphite in a pencil is softer. Try writing on paper, the pencil will write, the real lead will not
No, feldspar is not softer than pencil lead. Pencil lead, which is made of graphite, has a higher hardness on the Mohs scale compared to feldspar. Feldspar is typically around a 6 on the Mohs scale, while graphite is around 1-2.
It's softer. #1 softest, #2 slightly harder, #3 harder than #2, etc.Softer.a #1 pencil is softer than a#2 pencil
A 6B pencil lead will generally mark darker than a 2B pencil lead. The higher the 'B' number, the softer and darker the lead.
Limestone is a form of calcium carbonate that is softer than marble but harder than chalk. It is commonly used in construction materials and can be found in different shades depending on the mineral impurities present.
Blackboards are typically made of a material that is softer than chalk, such as slate or porcelain. When you write on a blackboard with chalk, the friction between the chalk and the board causes the chalk to wear down and leave behind tiny particles of sand or abrasive material embedded in the chalk. These abrasive particles then scratch the surface of the blackboard as you write, creating marks that can be difficult to erase.
Yes, a 3B pencil is darker than a 2B pencil. The higher the number in the pencil grade, the softer the graphite and therefore the darker the mark it will make on paper.
A 9mm pencil lead is thicker than a 7mm pencil lead.
The darkness of pencil lead is determined by its graphite-to-clay ratio. The higher the graphite content, the darker the lead. Therefore, a pencil lead labeled as "HB" or "B" will be darker than a lead labeled as "H" or "F." The darkest pencil lead commonly available is typically labeled as "6B" or "8B," indicating a high graphite concentration.
Many pencils across the world and almost all in Europe are graded on the European system using a continuüm from "H" (for hardness) to "B" (for blackness), as well as "F" (for fine point). The standard writing pencil is graded HB.
A 7mm pencil lead is thicker than a 5mm pencil lead. The diameter of the lead determines its thickness, so the lead with a larger diameter will be thicker.
b stands for black. 8b is blacker (softer) than 6b.