Across
- 6. A table of elements arranged in the order of their atomic numbers and arranged in groups and periods.
- 10. Atomic mass unit: Unit to measure the relative mass of atoms and molecules.
- 12. Substance that can be drawn into wires.
- 13. horizontal row in the periodic table having elements with the same # of energy levels.
- 14. An element (e.g. arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
- 16. Vertical columns in the periodic table holding elements with the same # of valence electrons
- 18. materials which have a conductivity between conductors (generally metals) and nonconductors or insulators
- 19. 17th column elements of the periodic table; most reactive of all nonmetals
- 20. Molecule made up of two atoms
- 21. a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well.
- 22. 2nd group (Vertical Column) in the periodic table, 2nd most reactive metals.
Down
- 1. Elements between the representative elements; 3rd to 12th column.
- 2. Electrostatic force of attraction between two metallic atoms
- 3. Elements that are located to the right of the periodic table, typically poor conductors of heat and electricity.
- 4. 18th or the rightmost column of elements in the periodic table and are very un-reactive.
- 5. Two or more different physical forms of an element.
- 7. a representation of the valence electrons of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom.
- 8. Elements with atomic number greater than Uranium (92)
- 9. Substance that can be beaten into sheets.
- 11. First group (vertical column) in the periodic table, most reactive of all metals.
- 15. Elements that emits Alpha, Beta or gamma particles.
- 17. Electrons in the outermost energy level of an atom.