Across
- 1. An element typically dense, solid, ductile, malleable, highly conductive, and chemically reactive, especially in nonmetal elements. Metals are located on the left end of the periodic table.
- 3. A table of the chemical elements arranged to display their periodic properties in relation to their atomic numbers
- 6. (1) a row in the periodic table of elements (2) The time interval for one complete cycle of periodic motion
- 9. An element in Group 18 on the periodic table has eight valence electrons that fill the outer energy level.
- 13. An element in Group 2 of the periodic table, has two valence electrons that it tends to lose easily to become 2 + cation, making it very reactive.
- 14. A column of elements in the periodic table having similar valence electron arrangement, resulting in similar chemical properties; also known as a group
- 17. An element from either two rows usually placed below the periodic table; a member of either the lanthanide or actinide series. It typically has two valence electrons.
- 18. An element in Group 1 of the periodic table, has one valence electron that can easily be lost to form a + cation, making it extremely reactive; the most reactive of all the metals.
- 19. The unique number of protons found in every atom of a particular.
Down
- 2. A representation of an atom consisting of its chemical symbol with surrounding dots representing its valence electrons.
- 4. A measure of an element's ability to attract and hold electrons when bonded to other atoms
- 5. Same as a family
- 7. The law that states that the properties of the elements vary with their atomic numbers in a regular, repeated law
- 8. any electron in the outermost energy level of a neutral atom. Unpaired valence electrons are usually involved in chemical bonding
- 10. Any elements in Groups 3-12 of the periodic table, typically having one or two valence electrons, which it easily loses, resulting in cations with charges of +1 or +2
- 11. An element with characteristics between those metals and nonmetals; also called semiconductors; located between metals and nonmetals on the periodic table
- 12. An element in Group 17 of the periodic table has seven valence electrons. It easily gains an electron, forming a 1-anion, which causes it to be highly reactive
- 15. Any of Groups 13-16 in the periodic table; so-named because they contain metals, nonmetals, and metalloids. These groups are often named for the first element in the family.
- 16. An element that typically has four or more valence electrons and does not exhibit the general properties of metals; located on the right side of the periodic table.