Answer:
I remember doing this in 7th,
1. D
2. B or D, more leaning on B though
3. A
Nuclear fossion hope this helps
Answer:
The internal energy is the total amount of kinetic energy and potential energy of all the particles in the system. ... When the substance melts or boils, energy is put in to breaking the bonds that are holding particles together, which increases the potential energy.
Explanation:
C. Sodium chloride
hope it helps u hehe :)