Across
- 6. a horizontal row on The Periodic Table of the Elements
- 9. metals are considered this if they can be made into sheets.
- 10. electron’s in the outer most shell.
- 11. organic compound consisting entirely of hydrogen and carbon.
- 14. a vertical column on The Periodic Table of the Elements
- 15. atom with same number of protons and electrons but different numbers of neutrons
- 17. # 6 on The Periodic Table of the Elements
- 19. # 16 on The Periodic Table of the Elements
- 23. metals are considered this if they can be made into wire.
- 25. this is the smallest part of an element which can take part in a chemical reaction.
- 26. atom with same number of protons, but a different number of electrons
- 27. type of bonding where atoms share many free electrons
- 28. this scientist created the atomic theory
- 29. these types of metals are found in the middle of the Periodic Table.
Down
- 1. arranged elements on the periodic table by mass.
- 2. these are brittle, poor conductors, have no luster, and can be a (s) (l) (g).
- 3. the positively charged dense center of an atom.
- 4. # 6 on The Periodic Table of the Elements
- 5. the subatomic part of an atom found in the electron cloud
- 7. this particle has a no charge and is composed of two down quarks, and one up quark.
- 8. # 92 on The Periodic Table of the Elements
- 12. type of bonding where an atom gains or loses electrons (+/-)
- 13. type of bonding where atoms share electrons
- 16. this is a positively charged particle composed of two up quarks, one down
- 18. used a gold foil experiment to help understand the structure of the atom.
- 20. arranged elements on the periodic table by atomic number.
- 21. these have properties of both metals and nonmetals.
- 22. these are good conductors of heat and electricity. They also have luster and a high density
- 24. metals are considered this if they are shiny.
- 26. the process of removing electrons from an atom to form ions