Atoms vocabulary

2. Substances that are the building blocks of all matter
3. The smallest particle into which an element can be divided and still have the same properties of that element
5. Number of protons in the nucleus of one atom of an element
7. Electrons found in the outermost shell of an atom and determine the chemical properties such as reactivity
9. A chart where all elements are organized into periods and groups according to their chemical properties
10. Number of protons and neutrons
11. Molecule that is made up of more than one element
13. Dull, poor conductors, brittle, found on the right side of the periodic table
14. Some properties of both metals and nonmetals. found on the stair steps of the periodic table
15. A subatomic particle that has a positive charge and that is found in the nucleus of an atom; identifies the element

1. A way of describing the number of atoms that make up a molecule or compound
4. Negative charge, 0 AMU, located in the electron cloud, outer cloud is involved in chemical reactions
6. High luster, good conductor, malleable found on the left of the periodic table
8. one or two letter code that stand for an element
12. A subatomic particle that has no charge and is found in the nucleus of an atom