(MOD) Unit 2 CW 2

6. anything that has mass and takes up space
7. elements that have some properties of metals and some properties of nonmetals
8. The average mass of the nucleus of that element.
9. A subatomic particle with no charge located at the center of an atom.
11. Repeating rows of the periodic table that demonstrate patterns of how elements are arranged.
12. Elements that are good conductors of electricity and thermal energy and are often solid at room temperature.
13. Elements arranged in vertical columns of the periodic table that share the same properties.
15. the basic particle from which all elements are made
16. An abbreviation for the name of an element on the periodic table.

1. a group of two or more atoms held together by chemical bonds
2. The number of protons in the nucleus of each element.
3. located in the outermost shell of an atom
4. A positively charged subatomic particle located at the center of an atom.
5. a pure substance that cannot be broken down into any other substance by chemical or physical means
10. A subatomic particle of an atom that is negatively charged and orbits the nucleus extremely fast.
14. an element that lacks most of the properties of a metal