Periodic table

2. A small group of atoms joined together by chemical bonds, like H₂O.
3. The one- or two-letter abbreviation used to represent an element (e.g., He or Ag).
4. The bond type formed by the sharing of electrons, typical between two nonmetal atoms.
9. The subatomic particle that is transferred, shared, or forms a ""sea"" during a chemical bond.
12. The type of bond formed by the transfer of electrons from a metal to a nonmetal, creating positive and negative charges.
14. Elements that are shiny, malleable, and good conductors of heat and electricity.
15. The large chart where all known elements are organized by atomic number and properties.
17. The elements in Group 17, known for being ""Corrosive Thieves"" that need one electron.

1. A pure substance made of only one type of atom (e.g., Carbon or Sulfur).
5. Elements that lack metallic properties and typically gain or share electrons.
6. The horizontal rows in the periodic table, which indicate how many electron shells an element has.
7. The type of bond where metal atoms share their outer electrons in a ""sea of electrons,"" explaining why metals are flexible.
8. The basic unit of a chemical element.
10. A substance formed when two or more different elements are chemically bonded together, like NaCl.
11. The elements in Group 18, often called ""The Lonely Emos"" because they are stable and non-reactive.
13. The vertical columns in the periodic table; elements here have similar ""personalities.
16. A solid structure in which atoms or molecules are placed in a perfect, ordered, repeating pattern, like in table salt.