Periodic Table Vocabulary

5. a substance that cant be broken into other substances
8. the number of protons and neutrons in the nucleus
10. a group of elements that have both metal and non metal characteristics
13. positive charged particle in nucleus
15. the number of protons contained in each nucleus of its atom. Located over the elemental symbol.
17. How readily a substance combines chemically with other substances.
19. atom with same atomic number, different number of neutrons
20. a particle with negative charge

1. another word for groups of columns
2. electron electron that is found in the outer most shell of an atom
3. A class of elements characterized by physical properties that include shininess, malleability, ductility, and conductivity.
4. the smallest component of an element.
6. ability of an atom to attract electrons when the atom is in a compound.
7. an element that is not a metal and has properties generally opposite to those of a metal. metalloid
9. a vertical column in periodic table
11. all of the monovalent metals in periodic table6
12. center of an atom; made up of protons and neutrons.
14. the process of adding electrons to or removing electrons from an atom or group of atoms.
16. neutral charged particle in nucleus
18. a horizontal row in the periodic table