Across
- 1. the element with the most protons
- 7. a substance in which all atoms are alike
- 9. positively charged atom
- 11. shiny and malleable substances
- 12. the element with the least amount of protons
- 13. a chemical that can dissolve in water and can combine with acids to form salts
- 14. neutral charged atom
- 16. an element or substance that is not a metal
- 17. the element most commonly found in bananas
- 19. very reactive elements that form a salt when it reacts with metal
Down
- 2. nuclear charge number
- 3. vertical rows in the periodic table
- 4. a substance composed of two or more chemically bonded elements in fixed proportions
- 5. horizontal rows of the periodic table
- 6. negatively charged atom
- 8. the group of gasses in the periodic table
- 10. a radioactive metallic chemical element with the atomic number 88
- 13. the mass of an atom
- 15. the first in the noble gas group in the periodic table
- 18. the element that living organisms need to breathe
