Chapter 3&4 Vocaubulary
Across
- 4. The electrons that are in the highest energy level of an atom
- 5. various metallic elements, found in the center of the periodic table groups 3-12
- 8. chemical elements whose physical and chemical properties fall in between the metal and non-metal categories, group looks like a staircase on the periodic table
- 11. group 2 on the periodic table, have 2 valence electrons
- 12. a group of symbols that show the ratio of elements in a compound
- 13. mixture made of two or more elements, at least one has to be a metal
- 15. model of an atom that shows the chemical symbol surrounded by dots representing valence electrons
- 16. attraction between positive metal ion and the electrons surrounding it
Down
- 1. bond formed when two atoms share electrons
- 2. all chemical bonds
- 3. A gaseous chemical element that is very stable,do not chemically combine often because they have 8 valence electrons, group 18 on the periodic table.
- 6. tell the ratio of elements in a compound
- 7. elements on the right of the periodic table, not metallic, not malleable
- 9. the attraction between two oppositely charged ions
- 10. force of attraction that holds atoms together
- 14. group 1 on the periodic table, very reactive, only have 1 valence electron