Across
- 4. Rows in the periodic table
- 5. Smallest particle something can be cut into while still retaining its properties.
- 6. What the elements are abbreviated to
- 7. 2 or more elements bonded together like a molecule
- 10. The mass of an atom shown at the bottom of every element box in the periodic table
- 13. Subatomic particles that orbit the nucleus and have a negative charge. Too small to be counted for the mass of the atom
- 15. Subatomic particle that is in the nucleus, and has a neutral charge. The number of protons determines the element. Can be calculated by subtracting protons from mass.
Down
- 1. Irregular atom where the number of neutrons are different
- 2. Electrons in the outermost energy ring
- 3. The mass of the atom, electrons are not included
- 8. The number of protons in an atom and how the periodic table is organized by
- 9. Subatomic particle that is in the nucleus, and has a positive charge. The number of protons determines the element.
- 11. The center of the cell where the protons and neutrons are located
- 12. Columns of elements that have something in common
- 14. Table showing the all the elements, organized by Atomic number
