Across
- 4. The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium, magnesium, calcium, strontium, barium, and radium.
- 5. electrons on the outer shell of the atom
- 7. an element intermediate between those of metals and solid nonmetals or semiconductors
- 9. a law stating that the elements, when listed in order of their atomic numbers fall into recurring groups
- 11. The halogens are a group in the periodic table consisting of five chemically related elements: fluorine, chlorine, bromine, iodine (I), and astatine
- 14. a table that displays all known elements and atoms that have a given number of protrons in their nuclei
Down
- 1. an element that is not a metal
- 2. the rows of the periodic table
- 3. elements whose reactions make strong bases
- 6. the columns of the periodic table
- 8. gases with very low reactivity
- 10. the metal in the center of the periodic table connecting the main groups of metals
- 12. atom that is ductile, good conductors of electricity, and typically solid at room temperature
- 13. a unit of mass used for atomic weight