Kimia dari suatu unsur ditentukan oleh cara di mana elektron disusun dalam atom. Pengaturan demikian merupakan dasar dari klasifikasi periodik modern unsur-unsur: Tabel Periodik.
| Game | Time | WPM | Accuracy |
|---|---|---|---|
| 4943 | 2014-06-19 02:33:15 | 69.90 | 86% |
| 4729 | 2014-04-27 00:31:12 | 79.61 | 93% |
| 4639 | 2014-04-17 12:36:03 | 75.46 | 92% |
| 4453 | 2014-04-09 05:10:27 | 70.59 | 87% |
| 4389 | 2014-04-05 16:44:57 | 51.56 | 87% |
| 4360 | 2014-04-02 09:46:01 | 73.40 | 91% |
| 4309 | 2014-04-02 05:20:55 | 64.52 | 85% |
| 4187 | 2014-03-31 14:03:54 | 70.86 | 92% |
| 4156 | 2014-03-30 12:55:12 | 69.41 | 90% |
| 3845 | 2014-03-22 10:53:36 | 60.48 | 82% |
| 3690 | 2014-03-20 13:39:54 | 62.04 | 86% |
| 3288 | 2014-03-14 07:48:31 | 55.84 | 84% |
| 3210 | 2014-03-14 01:31:04 | 61.74 | 86% |
| 3173 | 2014-03-13 07:01:56 | 61.78 | 87% |
| 3047 | 2014-03-12 05:04:06 | 55.93 | 90% |
| 3033 | 2014-03-12 04:29:22 | 49.90 | 85% |
| 2822 | 2014-03-10 04:31:30 | 48.10 | 84% |
| 2780 | 2014-03-09 14:50:49 | 49.05 | 86% |
| 2767 | 2014-03-09 14:12:27 | 59.70 | 89% |
| 2741 | 2014-03-09 13:19:39 | 60.35 | 92% |
| 2582 | 2014-03-08 04:37:58 | 58.89 | 84% |
| 2105 | 2014-03-05 05:04:35 | 63.34 | 86% |
| 2079 | 2014-03-05 03:20:03 | 64.06 | 91% |
| 1794 | 2014-03-02 09:37:40 | 59.28 | 87% |
| 1624 | 2014-03-01 03:12:41 | 54.19 | 88% |
| 1318 | 2014-02-25 10:38:06 | 60.80 | 95% |
| 1231 | 2014-02-25 01:34:27 | 47.64 | 84% |
| 1091 | 2014-02-23 12:48:11 | 54.36 | 89% |
| 1022 | 2014-02-23 03:54:46 | 52.54 | 86% |
| 1000 | 2014-02-22 19:38:21 | 49.82 | 89% |
| 942 | 2014-02-22 15:04:53 | 44.78 | 81% |
| 882 | 2014-02-22 11:13:11 | 47.20 | 85% |
| 701 | 2014-02-17 20:34:26 | 52.90 | 95% |
| 304 | 2014-01-21 14:22:19 | 51.59 | 94% |
| 300 | 2014-01-21 14:16:04 | 39.61 | 91% |