If I am reading this correct, the energy content would decrease for the liquid to solidify
Answer:
Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.
Answer:
metal and non-metal
Explanation:
Ionic bonds are formed when a metal loses electrons and a non-metal gains said electrons.
A cloud in space that is composed of dust and gas is call a nebula. The word "nebula" is derived from the Latin word for "cloud," and nebulae in space are indeed large interstellar clouds made up of dust, hydrogen, helium and plasma.
A calcium ion already is missing two electrons (in its stable configuration corresponding to the nearest noble gas's electron configuration) from its neutral state as an atom. This means that if it looses a third electron, it now has a charge of +3e. e is NOT the charge of an electron, it is the elementary charge unit.
