According to the classification according to the type of domestic dangerous goods, they are divided into grades and designated quantity grades. Search for hazardous materials and check reaction formulas. It was created to provide necessary information to students and dangerous materials managers.
It includes a 4-choice quiz and blind memorization. It includes the periodic table and makes it easy to see the element symbols.
If there are any inaccurate information (chemistry, law), I will correct it.
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