Chapter 5

2. characterized by high electrical and thermal conductivity
3. "When elements are arranged in order of increasing atomic number, there is a periodic repetition of their chemical and physical properties."
4. The vertical rows of the periodic table
7. chemical element that forms a salt when it reacts with metal
8. any of various metallic elements (such as chromium, iron, and nickel) that have valence electrons in two shells instead of only one.
11. the organized array of all the chemical elements in order of increasing atomic number
13. gaseous chemical element that does not readily enter into chemical combination with other elements
14. a chemical element that exhibits some metal and some nonmetal properties

1. any of the strongly basic metals consisting of beryllium, magnesium, calcium
5. The horizontal rows of the periodic table
6. the electrons in the outermost shell, or energy level, of an atom
9. a chemical element (such as boron, carbon, or nitrogen) that lacks the characteristics of a metal.
10. a unit for expressing masses of atoms, molecules, or subatomic particles
12. any of the six chemical elements that make up Group 1 (Ia) of the periodic table