Atoms

5. Positively charged ions that have more protons than electrons
6. The subatomic particle that is positively charged
8. The first element on the periodic table
11. The basic unit of an element
12. The number that provides us with the number of protons in an atom
15. The letter or letters that tell us what element is on the periodic table

1. A chart that sorts the elements based on their physical and chemical properties
2. Negatively charged ions that have more electrons than protons
3. An element that has an atomic number of 26
4. The number of protons and neutrons combined in an atom
7. The part of the atom that makes up the atomic mass
9. Atoms with the same number of protons, but different numbers of neutrons
10. Any atom or group of atoms that has one or more positive or negative electrical charges
13. One of the subatomic particles that makes up the nucleus
14. The subatomic particle that is found in the shell of the atom