Answer:
The chemical compound Mg(NO3)2, also known as magnesium nitrate, is very soluble, especially in water.
A phase change is when matter changes to from one state ( solid, liquid, gas, plasma) to another.
a ceramic or metal container in which metals or other substances may be melted or subjected to very high temperatures.
"the crucible tipped and the mold filled with liquid metal"
a situation of severe trial, or in which different elements interact, leading to the creation of something new.
"their relationship was forged in the crucible of war"
1 Hydrogen 1s1
2 Helium 1s2
3 Lithium 2s1
