Across
- 2. -the smallest particle of an element that still retains the properties of the element
- 5. -uses the symbol for an element and dots representing the number of electrons in the element's outer energy level
- 8. -area around the nucleus of an atom where the atom's electrons are most likely found
- 9. -particle in the nucleus with an electric charge of 1+
- 11. -vertical column in the periodic table
- 12. -organized list of all known elements that are arranged by increasing atomic number and by changes in chemical and physical properties
- 14. -the small, positively charged center of an atom, contains protons and neutrons
Down
- 1. -horizontal row in the periodic table
- 2. -number of proton's in an atom's nucleus
- 3. -weighted-average mass of an element's isotopes according to their natural abundance
- 4. -sum of the number of protons and neutrons in an atom's nucleus
- 6. -electrically neutral particle inside the nucleus of an atom
- 7. -atom of an element that has a specific number of neutrons
- 10. -particle of matter that makes up protons and neutrons
- 13. -particle with an electric charge of 1-, surrounds the nucleus of an atom