التحدي الثاني
Quiz
•
Chemistry
•
12th Grade
•
Medium

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
مادة كتلتها 75جرام وكتلتها المولية
150 g/mol
.............. فإن عدد مولاتها
2 mol
0.5 mol
0.25 mol
4 mol
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
..........فكرة لاوجود للفراغ هي أحد أفكار
بور
دالتون
ديمقرطس
أرسطو
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
جسيمات تحوي
بروتونين ونيوترونين
الفا
بيتا الموجبة
جاما
بيتا السالبة
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
أبسط نسبة عددية صحيحة لعدد مولات العناصر بالمركب
الصيغة الجزيئية
الصيغة الأولية
الصيغة البنائية
الصيغة العددية
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
..............أي العناصر الآتية سائلاً
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
تكون الذرة متعادلة كهربائيا
: عندما يكون
عدد البروتونات = عدد النيوترونات
العدد الذري = العدد الكتلي
عدد البروتونات = عدد الإلكترونات
عدد البروتونات = العدد الكتلي
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
.........عنصر يحوي 55بروتون و 78نيوترون فإن عدده الذري
55
78
23
133
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