Graphite cannot be "frozen" since it is already a solid. However, cooling it does not decrease the toxicity, it only makes it colder - this can cause problems if you consume it on its own.
Yes, burning graphite can release toxic fumes and particles that are harmful to human health.
No ,because there is no lead in a graphite pencil, only carbon.
No, graphite in pencils is not harmful if used as intended. It is non-toxic and safe for use in writing and drawing. However, inhaling large amounts of graphite dust over a long period of time may cause respiratory issues.
Lead pencils were named after their use of graphite, not lead. Graphite can be mistaken as lead because of its dark color. Lead-based paints used for coloring pencil barrels and for marking paper were toxic.
No, you cannot get lead poisoning from a pencil. Pencils do not contain lead; they use graphite for the writing material. Graphite is not toxic and cannot cause lead poisoning.
Graphite is considered non-toxic and environmentally safe. That's not saying that you should be eating it! :)
No, pencils are not made out of lead. They are made from a combination of graphite and clay. Lead was used in early pencils, but its toxic nature led to the transition to graphite.
Yes, burning graphite can release toxic fumes and particles that are harmful to human health.
Graphite is a very soft material, and is non-toxic. It is easily machined.
No ,because there is no lead in a graphite pencil, only carbon.
Yes. A material's toxicity does not usually change after a change of state.
Graphite the lead thing
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, graphite in pencils is not harmful if used as intended. It is non-toxic and safe for use in writing and drawing. However, inhaling large amounts of graphite dust over a long period of time may cause respiratory issues.
Lead pencils were named after their use of graphite, not lead. Graphite can be mistaken as lead because of its dark color. Lead-based paints used for coloring pencil barrels and for marking paper were toxic.
first step in pencil manufacture involves making the graphite core as the "lead". Back in the day we used lead which is toxic, the we switched to Graphite which is non-toxic. --------- It is frequently called "lead" as in "lead" pencils. But there is no lead in Graphite. Pencils simply contain a mixture of graphite and fine clay in varying proportions to make them hard or soft.
No. It is a physical change, because the graphite is still graphite.