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Chemistry"History of chemical elements discovery"Age category: age 14-18, undergraduates, teachers International Online Chemistry Contest "History of chemical elements discovery" with a quick result. Participants are invited to answer 15 questions with answer options. There is no time limit. Participation in the contest is free, after registration, you can order certificates for the participant and for the teacher. |
Best participants in last month
| Participant | Locality | Score |
| Annabayramov Umyt Dovranovich |  etrap Kaka | 14 из 15 |
| Hallovova Aylar Dovletgeldiyevna | etrap Kaka | 14 из 15 |
| Taychaeva Leyli Ovezmyradovna | etrap Kaka | 14 из 15 |
| Erniyazov Arapkhan Bagdadovich | city Anav | 14 из 15 |
| Araphanova Melike Araphanovna | etrap Kaka | 14 из 15 |
Last 20 participants
| Participant | Locality | Score |
| Annabayramov Umyt Dovranovich | etrap Kaka | 14 из 15 |
| Hallovova Aylar Dovletgeldiyevna | etrap Kaka | 14 из 15 |
| Taychaeva Leyli Ovezmyradovna | etrap Kaka | 14 из 15 |
| Erniyazov Arapkhan Bagdadovich | city Anav | 14 из 15 |
| Araphanova Melike Araphanovna | etrap Kaka | 14 из 15 |
| Baimakhanova Kamila |  Turkestan region | 15 из 15 |
| Bai Bin Wang |  Meishan Rd., Niaosong Dist., Kaohsiung City 833, Taiwan (R.O.C.) | 15 из 15 |
| Bai Bin Wang | Meishan Rd., Niaosong Dist., Kaohsiung City 833, Taiwan (R.O.C.) | 15 из 15 |
| Anuradha.m |  Cheran ma nagar | 11 из 15 |
| Mitache Monica |  Constanta | 14 из 15 |
| Qilichboyev Qadirbergan Sardor Og'li |  Urgench city | 12 из 15 |
| Qadirbergan Sardor O'g'li Qilichboyev |  g | 4 из 15 |
| Qilichboyev Qadirbergan | Urgench city | 10 из 15 |
| Florescu Ana-Maria | București | 14 из 15 |
| Xurramova Maftuna Baxodir Qizi | Qashqadaryo | 9 из 15 |
| Xurramova Maftuna Baxodir Qizi | Qashqadaryo | 8 из 15 |
| Xurramova Maftuna Baxodir Qizi | Qashqadaryo | 8 из 15 |
| Sujit Kumar Biswas |  Narayanganj | 8 из 15 |
| Aryan Prakash | goregaon | 13 из 15 |
| Rick Banerjee | Kolkata | 13 из 15 |