When Magnesium reacts with oxygen, heat is
...When Magnesium reacts with oxygen, heat is
absorbed and the reaction is endothermic
evolved and the reaction is endothermic
evolved and the reaction is exothermic
absorbed and the reaction is exothermic
Correct answer is C
The Magnesium actually reacts with oxygen in the air, is burnt and produces a bright light. The bright light emits a lot of heat so the reaction is exothermic.
Which of the following statements about soapless detergents is correct? They ...
The heat energy produced when the human body metabolises 1 gram of fat is ...
Which of the following compounds is a base? ...
Which of the following solutions will conduct the least amount of electricity? ...
What is the chemical symbol for Neodymium? ...
What is the chemical symbol for Californium? ...
Which formula is used to indicate the degree of acidity of an acid? ...