Paper 1 February/March 2019 CHEMISTRY (9701/11) IGCSE
Cambridge
AS & A Level
Chemistry (9701)
خرداد
2019
شامل مباحث:
تعداد سوالات: 30
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه
پیش نمایش صفحه اول فایل
An energy cycle is shown.
The energy changes involved are X, Y and Z.
The numerical value of energy change Y is either –890 or +890.
The numerical value of energy change Z is either –964 or +964.
Which of the three values are negative?