Chemistry Crossword

4. A negatively charged particle.
7. These types of metals are found in the middle of The Periodic Table of Elements.
8. These are good conductors of heat and electricity. They also make up the majority of The Periodic Table of Elements.
12. Metals are considered this if they can be made into sheets.
14. The type of bonding where atoms share free electrons.
15. Water (H₂O) is an example of a ______________.
17. The name for the vertical columns on The Periodic Table of Elements.
18. The positively charged dense center of an atom.
19. A positively charged particle.
20. The type of bonding where an atom gains or loses electrons, forming ions.
22. Element #19 on The Periodic Table of Elements.

1. Hydrogen (H) is an example of an ____________.
2. The name for the horizontal rows on The Periodic Table of Elements.
3. Atoms always have the same number of protons and electrons, called the _____________ number.
5. These are brittle and are poor conductors of electricity. They also can be solid, liquid, or gas at room temperature.
6. The nucleus has almost all of the ________ of the atom.
9. Electrons in the outer-most shell.
10. Abbreviation for Atomic Mass Units.
11. They have properties of both metals and nonmetals.
13. A particle with no charge.
16. Organic compound consisting entirely of hydrogen and carbon.
21. Element #6 on The Periodic Table of Elements.