Across
- 2. -arrangement of chemical elements according to atomic number
- 4. - an electron on the outermost energy level of an atom
- 6. -its conductivity increases with temperature and in the presence of impurities
- 8. -the smallest component of an element
- 10. , a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy
- 11. -not containing or resembling or characteristic of a metal
- 12. - the columns in the periodic table
- 14. -quantity of protons in the nucleus of an atom of an element
- 15. -an elementary particle with zero charge
- 16. , a mixture containing two or more metallic elements
- 18. -a stable particle with positive charge
- 19. -an elementary particle with negative charge
Down
- 1. -a chemical element or alloy that is usually a shiny solid
- 3. - a one or two letter abbreviation for an element
- 5. -the sum of the number of neutrons and protons in an atomic nucleus
- 7. - the rows in the periodic table
- 9. -the positively charged dense center of an atom
- 13. -atom with same atomic number, different number of neutrons
- 14. -of or being a nonmetallic element that has some of the properties of metal
- 17. -a representation of something, often on a smaller scale