0652/11 Physical Science Oct Nov 2017 Online Test | Cambridge IGCSE MCQ
Cambridge
IGCSE
Physical Science (0652)
بهمن
2017
مشاهده نمونه سوال
شامل مباحث:
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
45 دقیقه
پیش نمایش صفحه اول فایل
Cryolite is an ore of aluminium. It contains sodium, aluminium and fluorine atoms.
Cryolite contains three times as many atoms of sodium than aluminium and two times as many atoms of fluorine than sodium.
What is the formula of cryolite?