Periodic Table

2. the number of protons in the nucleus of an atom
4. a group 1 metal
5. the small, dense center of positive charge in an atom
6. an element that gives up electrons relatively easily and is typically lustrous, malleable, and a good conductor of heat and electricity.
9. a group 8 element
11. a positively charged particle in an atomic nucleus
13. a negatively charged particle that occupies the space around the nucleus of an atom Nuclear Atom—the modern concept of the atom as having a dense center of positive charge (the nucleus) and electrons moving around the outside
14. atoms of the same element that have different numbers of neutrons

1. an element that does not exhibit metallic characteristics.
3. the total number of protons and neutrons in the atomic nucleus of an atom PeriodicTable a chart showing all the elements arranged in columns in such a way that all the elements in a given column exhibit similar chemical properties
7. a substance with constant composition that can be broken down into elements by chemical processes
8. a group 7 element
10. the fundamental unit of which elements are composed
12. neutral particle contained in the nucleus of the particle, slightly more massive than a proton but has no charge.