1. ivancernov78669

    ivancernov78669

    Awards:
    1
    Discoverer of the Year
    5
    Chemistry
    For participation in the project "Acid Rain"
    other 4 awards
    Chemistry
    For participation in the project "Самодельные чернила"
    Chemistry
    For participation in the project "Батарейка из лимона"
    Chemistry
    For participation in the project "Определяем качество молока в домашних условиях"
    Chemistry
    For participation in the project "Резиновое яйцо"