fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · edit-226 days ago[Partially incorrect, see comments.] Pens in Spacemander.xyzexternal-linkmessage-square151fedilinkarrow-up11.47Karrow-down135
arrow-up11.44Karrow-down1external-link[Partially incorrect, see comments.] Pens in Spacemander.xyzfossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · edit-226 days agomessage-square151fedilink
minus-squareNuraShiny [any]@hexbear.netlinkfedilinkEnglisharrow-up8arrow-down2·26 days agoThere is no way either side used lead pencils. Saying lead is in pencils is a very outdated thing, it’s all graphite these days.
minus-squarexor@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up18arrow-down2·26 days agoit hasn’t been graphite for while now either….
minus-squareArcka@midwest.sociallinkfedilinkEnglisharrow-up5·25 days agoRegular chalk is calcium carbonate. Crayola’s website says their sidewalk chalk uses calcium sulfate (gypsum as an ingredient in plaster of paris). So they’re both calcium salts.
minus-squareAndromxda 🇺🇦🇵🇸🇹🇼@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up4·edit-226 days agoA sharp piece of graphite from a broken pencil is not something you would want in your eyes either
![[Partially incorrect, see comments.] Pens in Space](https://mander.xyz/pictrs/image/466a2af6-4d33-4f93-aa6c-eaaf49ab899f.jpeg){kind=link}
There is no way either side used lead pencils. Saying lead is in pencils is a very outdated thing, it’s all graphite these days.
it hasn’t been graphite for while now either….
Chalk isn’t chalk?
Regular chalk is calcium carbonate. Crayola’s website says their sidewalk chalk uses calcium sulfate (gypsum as an ingredient in plaster of paris).
So they’re both calcium salts.
no
A sharp piece of graphite from a broken pencil is not something you would want in your eyes either