Answer:
Explanation:
the element is sulphur so it gains electrons, since it is not a metal
The element calcium has a total of four energy levels<span> that each can hold a certain number of electrons. Its first and fourth energy levels hold two electrons each, and its second and third energy levels hold eight electrons each.</span>
Answer:
Carson models how the continental crust varies in thickness. Marisol records atmospheric and oceanic temperatures at several beaches. Eliza analyzes seismic wave activity from an earthquake using a computer model.
Solution. because the substances can't go back to their original form. like kool aid, when its mixed you cant separate the powder and the water again.