What does a high melting point temperature indicate about a substance?

If you want to create an electrical current, which situation would produce a solution capable of this

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom