Across
- 3. Smallest particle of an element that retains it's properties
- 4. Shiny, conductors, malleable, ductile, and solid elements
- 6. When an atom has a charge
- 8. electrons Electrons in the outermost orbital
- 9. Capital letter (with 1 or 2 lowercase)
- 11. Organizes table vertically
- 12. Particles with a negative charge that are around the nucleus
- 13. Particles in the nucleus that are electrically neutral
- 15. Particles in the nucleus with a positive charge
- 16. A substance made up of atoms that are alike
- 19. Elements chemically combined in a fixed proportion
- 20. A positively charged atom
Down
- 1. Number of protons an atom has
- 2. Sum of of protons and neutrons
- 5. Organizes table horizontally
- 7. Positively charged center of the atom
- 10. Area around the nucleus of an atom where electrons are most likely to be found
- 14. Brittle, dull, and mostly gaseous elements
- 17. Atoms of the same element with different numbers of neutrons
- 18. Electrons travel in defined circular orbits around the nucleus