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How do pencils write on paper?
Why does a pencil work so perfectly? Why does graphite leave marks on paper instead of just crumbling apart? And what do pancakes, honeycombs, geckos, and intermolecular forces have to do with any of it? This week we follow a simple pencil all the way down to carbon atoms, graphene sheets, and the weirdly satisfying chemistry that makes writing possible. Plus: final exam horror stories, missed alarms, and why reading the syllabus might save your GPA.
Support this podcast on Patreon
Buy Podcast Merch and Apparel
Check out our website at chemforyourlife.com
Watch our episodes on YouTube
Find us on Instagram, Twitter, and Facebook @ChemForYourLife
Timestamps
0:00 – The strangely satisfying feeling of fresh pencils
1:03 – So… how do pencils actually work?
2:07 – A “polymer eraser” sparks this whole episode
3:10 – Are pencils disappearing for Gen Alpha?
4:35 – Graphite, graphene, and carbon structures
6:20 – What graphene actually looks like
7:10 – Carbon bonding and tetrahedral shapes
8:10 – Double bonds and flat molecular structures
9:40 – Electron highways and conductivity
10:20 – Melissa’s graphene model demonstration
13:10 – Why graphene could replace silicon chips
13:30 – Carbon nanotubes explained
14:40 – What holds graphite layers together?
15:00 – Intermolecular forces return
17:10 – Quick refresher on intermolecular forces
18:50 – London dispersion forces and temporary dipoles
19:30 – Why graphite is brittle
20:00 – How pencils leave marks on paper
21:20 – Why graphite is basically perfectly designed for writing
22:00 – A detour into paper, parchment, and writing history
24:00 – Pencil hardness and clay mixtures
26:30 – Jam attempts a chemistry-heavy recap
33:20 – Cliffhanger: how erasers work
34:00 – Final exam disaster stories
36:50 – Oversleeping a college final
39:10 – Melissa’s sprint across campus in pajamas
41:00 – Read the syllabus. Seriously.
43:10 – Teasing next episode: erasers and other forms of carbon
Support this podcast on Patreon
Buy Podcast Merch and Apparel
Check out our website at chemforyourlife.com
Watch our episodes on YouTube
Find us on Instagram, Twitter, and Facebook @ChemForYourLife
References from the Episode:
Thanks to our monthly supporters
Kelly D.
Bri
Summer Alden
Amanda Raymond
Kyle McCray
Justine
Ash
Vince W
Julie S.
Heather Ragusa
Autoclave
Dorien VD
Scott Beyer
Jessie Reder
J0HNTR0Y
Jeannette Napoleon
Cullyn R
Erica Bee
Elizabeth P
Rachel Reina
Letila
Katrina Barnum-Huckins
Suzanne Phillips
Venus Rebholz
Jacob Taber
Brian Kimball
Kristina Gotfredsen
Timothy Parker
Steven Boyles
Chris Skupien
Chelsea B
Avishai Barnoy
Hunter Reardon
Support this podcast on Patreon
Buy Podcast Merch and Apparel
Check out our website at chemforyourlife.com
Watch our episodes on YouTube
Find us on Instagram, Twitter, and Facebook @ChemForYourLife
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
View all episodes
By Melissa and Jam, Bleav
4.6
294294 ratings
Why does a pencil work so perfectly? Why does graphite leave marks on paper instead of just crumbling apart? And what do pancakes, honeycombs, geckos, and intermolecular forces have to do with any of it? This week we follow a simple pencil all the way down to carbon atoms, graphene sheets, and the weirdly satisfying chemistry that makes writing possible. Plus: final exam horror stories, missed alarms, and why reading the syllabus might save your GPA.
Support this podcast on Patreon
Buy Podcast Merch and Apparel
Check out our website at chemforyourlife.com
Watch our episodes on YouTube
Find us on Instagram, Twitter, and Facebook @ChemForYourLife
Timestamps
0:00 – The strangely satisfying feeling of fresh pencils
1:03 – So… how do pencils actually work?
2:07 – A “polymer eraser” sparks this whole episode
3:10 – Are pencils disappearing for Gen Alpha?
4:35 – Graphite, graphene, and carbon structures
6:20 – What graphene actually looks like
7:10 – Carbon bonding and tetrahedral shapes
8:10 – Double bonds and flat molecular structures
9:40 – Electron highways and conductivity
10:20 – Melissa’s graphene model demonstration
13:10 – Why graphene could replace silicon chips
13:30 – Carbon nanotubes explained
14:40 – What holds graphite layers together?
15:00 – Intermolecular forces return
17:10 – Quick refresher on intermolecular forces
18:50 – London dispersion forces and temporary dipoles
19:30 – Why graphite is brittle
20:00 – How pencils leave marks on paper
21:20 – Why graphite is basically perfectly designed for writing
22:00 – A detour into paper, parchment, and writing history
24:00 – Pencil hardness and clay mixtures
26:30 – Jam attempts a chemistry-heavy recap
33:20 – Cliffhanger: how erasers work
34:00 – Final exam disaster stories
36:50 – Oversleeping a college final
39:10 – Melissa’s sprint across campus in pajamas
41:00 – Read the syllabus. Seriously.
43:10 – Teasing next episode: erasers and other forms of carbon
Support this podcast on Patreon
Buy Podcast Merch and Apparel
Check out our website at chemforyourlife.com
Watch our episodes on YouTube
Find us on Instagram, Twitter, and Facebook @ChemForYourLife
References from the Episode:
Thanks to our monthly supporters
Kelly D.
Bri
Summer Alden
Amanda Raymond
Kyle McCray
Justine
Ash
Vince W
Julie S.
Heather Ragusa
Autoclave
Dorien VD
Scott Beyer
Jessie Reder
J0HNTR0Y
Jeannette Napoleon
Cullyn R
Erica Bee
Elizabeth P
Rachel Reina
Letila
Katrina Barnum-Huckins
Suzanne Phillips
Venus Rebholz
Jacob Taber
Brian Kimball
Kristina Gotfredsen
Timothy Parker
Steven Boyles
Chris Skupien
Chelsea B
Avishai Barnoy
Hunter Reardon
Support this podcast on Patreon
Buy Podcast Merch and Apparel
Check out our website at chemforyourlife.com
Watch our episodes on YouTube
Find us on Instagram, Twitter, and Facebook @ChemForYourLife
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
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