Chemistry gizmo review Questions Perfectly Answered!!

what substances make up water? - Answer-hydrogen and oxygen what substances make up an iron pot - Answer-iron atom - Answer-Basic unit of matter electron dot diagram - Answer-a diagram that shows the element symbol surrounded by dots representing valence electrons energy level - Answer-A particular region where electrons can orbit a nucleus. ion - Answer-an atom or molecule that has an electrical charge because it has gained or lost electrons isotope - Answer-one of several forms of the same element mass number - Answer-the number of protons plus neutrons in the nucleus of an atom nucleus - Answer-the positively charged dense center of an atom periodic table - Answer-a chart that organized the chemical elements based on their properties radioactive - Answer-capable of releasing radiation valence electrons - Answer-electrons found in the outermost energy level of an atom