Question

During early research in nuclear energy, why were scientists surprised that the products from splitting a uranium

nucleus had less mass than the reactants?
O They expected that the large release of energy of would cause an increase in mass.
• Up to that time, only chemical changes were known to form less mass than they started with.
O All known changes always started and ended with the same amount of mass.
• Other known nuclear changes resulted in the same mass of products as reactants

Answer 1

I think the answer is C. All known changes always started and ended with the same amount of mass.

Step-by-step explanation:

I hope this helps!