Yes. All pencils use lead - not the element, but a graphite and clay mixture molded into a long narrow strip.
A life time if you have lead.
Hold the button that makes lead come out and gently push the lead back in at the same time,
Some of the brands of mechanical pencils include, but are not limited to, Bic, Pentel, Zebra, uni-ball, Sharpie, and Pilot. It is interesting to note that mechanical pencils can be in the plain, graphite color or there can be colored graphite used in colored mechanical pencils.
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Mechanical pencils, like the regular kind of pencils, use graphite.
Mechanical pencils themselves do not need any energy in the forms of battery or electricity. However, mechanical pencils do need human energy to work. We need to add lead and push lead out; they do not do this on their own.
Conrad Gessner, a Swiss naturalist and physician, is credited with inventing the lead for mechanical pencils in the 16th century. However, the "lead" in mechanical pencils is actually made of a mixture of graphite and clay, not actual lead.
because it tells you what kind of lead just like for mechanical pencils
lead pen because a lead pencil is a regular pencil.
A life time if you have lead.
No, the lead in mechanical pencils is actually a mix of graphite and clay, not the toxic substance lead. Ingesting a small amount of graphite is not harmful, but it's still best to avoid consuming it.
No, it is a mixture of Graphite (a form of Carbon) and clay.
Lead pencils do not actually contain lead; they are made of graphite. Graphite is not toxic to humans, so there is no risk of lead poisoning from using pencils. However, ingesting graphite or pencil fragments can cause mechanical irritation in the digestive tract.
Hold the button that makes lead come out and gently push the lead back in at the same time,
Yes, there is no rules written that you can't use mechanical pencils for school. However, it's better to get number 2 HB pencils because it's easier to erase.
Not necessarily. The choice of lead hardness in a mechanical pencil can vary depending on the manufacturer. Some people prefer softer leads like 2B or B for smoother writing, while others prefer HB for a balance of darkness and durability. If you prefer a particular lead hardness, you can purchase refills in that specific grade to ensure consistency.