Объясни опыты. Опыт 1.
В этом видео предложены опыты, подтверждающие взаимосвязь различных классов неорганических веществ.
3 weeks ago 01:22:44 1
3 months ago 00:02:31 5
5 months ago 00:20:34 1
5 months ago 00:53:11 1
6 months ago 00:10:02 3
7 months ago 00:17:24 3
7 months ago 03:37:51 1
7 months ago 00:05:45 1
7 months ago 00:22:30 1
7 months ago 01:50:41 1
7 months ago 00:02:45 4
7 months ago 00:29:43 1
7 months ago 01:38:57 1
7 months ago 00:04:53 1
7 months ago 00:43:48 1
7 months ago 00:16:35 2
7 months ago 00:04:44 1
7 months ago 00:18:23 1
7 months ago 00:19:00 1
7 months ago 00:35:44 1
8 months ago 00:14:05 1
8 months ago 01:37:17 1
8 months ago 01:37:51 1
8 months ago 00:22:01 1
