Some marble chips (calcium carbonate) are heated strongly and substances X and Y are formed.
Substance X is a white solid that reacts with water, giving out heat. Substance Y is a colourless gas.
What are substances X and Y?
1 )
A
2 )
B
C
4 )
D
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!