Across
- 2. The study of matter
- 5. Air we need to survive
- 8. The organized chart of elements according to the increasing atomic number
- 11. The amount of matter in an atom of an element
- 13. The subatomic particle of an atom that has a neutral charge
Down
- 1. The chemical element on the periodic table with the atomic number 1
- 3. The subatomic particle of an atom that has a negative charge
- 4. The subatomic particle of an atom that has a positive charge
- 6. Consists of electrically positive protons and neutral neutrons
- 7. Elements located on the left side of the periodic table
- 9. The smallest unit of an element
- 10. Elements located on the right side of the periodic table
- 12. The first metalloid on the periodic table