Предмет: Химия, автор: gugcwihxiw

Контрольная по химии 9 клас
1.Розчин-це
а) речовина у рідкому агрегатному стані; в) однорідна суміш речовин
б) хімічна сполука;
2.Масова частка розчиненої речовини виражається у:
a) відсотках;
в) літрах;
б) грамах;
г) частках.
3.Виберіть йон, який зумовлює лужне середовище водних розчинів:
а) H+
б) OH-
в) Cl-
г) Na+

Ответы

Автор ответа: ridmar8957

1.В)однорідна суміш речовин
2.А)відсотках
3.Г)Na+

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