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Kết quả 71-80 trong khoảng 4596
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Phản ứng nhiệt nhôm trong môi trường nước
Phản ứng nhiệt nhôm trong môi trường nước. Hóa vô cơ. Hóa học THPT. Lớp 12.
nguyenphat 
28-12-2009
61
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Chemistry experiment 12 - Thermal decomposition (thermolysis)
Thermal decomposition of sugar, ammonium dichromate and ammonium trichromate.
heoleocay 28-12-2009
20
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Chemistry Lesson: Ph Tests for Acids & Bases : Chemistry Ph Test for Acids & Bases: Dividing Colors
When performing a chemistry experiment to determine Ph level of acids and bases in household substances, divide substances into groups based on the colors brought out by the solution. Label solutions according to acidity and Ph levels with the tips
daohuongthon 28-12-2009
28
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