The first blank is Covalent compound
For the second blank, you are correct, though you may elaborate by specifying 'valence' electrons
It turns unto h2o and then back into water
D energy is absorbed making it feel colder.
The definition of endothermic means energy is absorbing and there is not as much heat anymore
Answer:
option C. Addition of protons to the atomic nucleus.
Explanation:
Elements are fundamentally made up of atoms. Atoms in turn has three sub particles.
These particles are; neutrons, electrons and protons.
The sub particles responsible for the mass of an atoms is basically the protons and neutrons. Going through the options;
The correct option is option C. Addition of protons to the atomic nucleus.