Across
- 1. The smallest unit of matter
- 2. Group 1 in the periodic table
- 3. A row in the periodic table
- 6. Has a neutral charge and a mass greater then a proton
- 7. Atoms that have the same number of protons
- 8. Located above the element symbol
- 9. The amount of matter in an object
Down
- 1. Group 2 in the periodic table
- 4. Atom or molecule that has a different number of protons than electrons
- 5. nonmetal that easily combines with other metals often from group 1