الجزء من الكون الذي يحتوي علي العملية او التفاعل الكيميائي يسمي
كيمياء الصف الأول الباب الرابع نموذج 1

Quiz
•
Chemistry
•
10th Grade
•
Medium

elostass gad
Used 15+ times
FREE Resource
27 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
الوسط المحيط
النظام
جدار الوسط
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
أي مما يلى يمثل معادلة حرارة تكوين قياسية؟
2Fe(s) + 2S(s) = 2FeS(s)
3C(g) + 8H(g) = C3H8(g)
½ N2(g) + 3/2H2(g) = NH3(g)
Cu(s) + S(s) + 2O2(l) = CuSO4(s)
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
أي المعادلات التالية تمثل حرارة احتراق الميثان CH4؟
CH4(g) + 2O2(g) = CO2(g) + 2H2O(g) ∆H = + 890 KJ
CH4(g) + 2O2(g) = C (s) + 2H2(g) + 2O2(g) ∆H = - 890 KJ
CH4(g) + O2(g) = 2CO (g) + 2H2O(g) ∆H = - 890 KJ
CH4(g) + 2O2(g) = CO2(g) + 2H2O(g) ∆H = - 890 KJ
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
سخنت 20 g من النحاس فارتفعت حرارتها من 20 oC إلى 75 oC فما هي كمية الحرارة الناتجة علما بأن السعة الحرارة للنحاس تساوى 400 JKg-1 oC-1؟
440 J
4.4 x 104 J
4.40 J
44.0 J
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
أي مما يلى غير صحيح عن التفاعل الماص للحرارة؟
إشارة ∆H موجبة
المتفاعلات أقل ثباتا من النواتج
المحتوى الحرارى للمتفاعلات اكبر من المحتوى الحرارى للنواتج
درجة حرارة الوسط المحيط تنخفض
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
من المعادلة التالية تكون حرارة
التكوين القياسية
N2(g) + 2O2(g) = 2NO2(g) ∆H = +66.4 KJ
+ 66.4 KJ
- 66.4 KJ
+ 33.2 KJ
- 33.2 KJ
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
عملية تفكك الماء لعناصرها تعتبر
طاردة
ماصة
لاتوجد اجابة صحيحة
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