Answer: A.
Explanation: When a chlorine atom gains an electron, its outermost principal energy level achieves an octet. In this case, the ion has the same outermost shell as the original atom, but now that shell has eight electrons in it.
Answer: Definition
Explanation: In science, the word 'theory' refers to the way in which people interpret facts. A scientific theory is the framework for observations and facts. Theories may change, the way in which they are interpreted may change, but the facts remain the same.
Answer: angular distance north or south from the celestial equator measured along a great circle passing through the celestial poles
Explanation:
Answer: ACID
Explanation:on the Ph scale their is acids and bass' the loewer the Ph is hte higher the acid will be
