LESSON 1.1CHEMISTRY I: GENERAL CHEMISTRY
ATOMS
Have you ever wondered what things are made out of? I mean, what makes a cake a cake besides deliciousness? To begin answering these questions we must first engage in a thought experiment. How many times can you rip a piece of paper in half and still have paper?
HALVINGS: 0 / 301× ZOOM
ACTUAL SIZE210.0 mm
// SCALE REFERENCE
SHEET OF PAPER

A standard A4 sheet. Rip it in half — you still have paper.
PAPERATOM
SHEET OF PAPER
210 mmTHUMBNAIL
26 mmSESAME SEED
3.3 mmHUMAN HAIR
0.41 mmRED BLOOD CELL
51 μmBACTERIUM
6.4 μmVIRUS
800 nmLARGE PROTEIN
100 nmDNA STRAND
12.5 nmETHANE MOLECULE
1.6 nmCARBON ATOM
~154 pm