Fig. 113. §7 Atoms
Molecule
A molecule is a group of atoms held together by chemical bonds.
1Facts
- Shelf
- Atoms
- Kind
- Built from a recipe
- Your own
- Your own molecule
- Sound
- Yes
- Hands-on
- Yes
- Licenses
- Public domain, CC0
2How to play
Tap it to heat it up. Hands-on: pull an atom; its bonds stretch and it springs back.
3Its controls
Table I. Every control on this Splash.
| Control | Kind | Range | Start |
|---|---|---|---|
| Heat it up | Tap | ||
| Heat | Button | ||
| Molecule | List | 31 choices | Caffeine |
4About it
A molecule is a group of atoms held together by chemical bonds. This one is a ball-and-stick model: each ball is an atom, colored by its element (carbon dark gray, hydrogen white, oxygen red, nitrogen blue), and each stick is a bond.
It starts as caffeine, C8H10N4O2, the stimulant in coffee and tea; the Splash tab has sugars, medicines, vitamins and DNA too. The atoms always jiggle a little on their bonds, as real ones do; tap it to heat it up and they shake hard, the light hydrogens furthest, each bond stretching and squeezing with its atoms, then it cools. In the Splash tab, pick another molecule, or type a name, a formula or a SMILES string (a way of writing a molecule on one line) to build your own.
5Details
- Splats
- Opens at 200,000 at Mid Detail, 60,004 at Low, and up to 260,000 at Max
- Your own files
- .mol, .sdf, .sd, .xyz, .pdb, .ent, .txt
6Sources and credits
| Work | By | License |
|---|---|---|
| PubChem 3D conformers (glucose, aspirin, ATP and the rest) | NCBI PubChem | Public domain |
| RCSB Protein Data Bank entry 1BNA (B-DNA dodecamer), hydrogens added | H. R. Drew, R. M. Wing, T. Takano, C. Broka, S. Tanaka, K. Itakura, R. E. Dickerson | CC0 1.0 |
