Across
- 2. Hydrochloric Acid
- 4. What does the 8 for oxygen mean?
- 10. What type of waves are gamma rays?
- 12. Which has a higher frequency, red or purple light?
Down
- 1. Which element has 20 protons and 20 neutrons?
- 3. What group does Neon and Radon fall under in the periodic table?
- 5. What group does Carbon, Sulfur, and Iodine fall under in the periodic table?
- 6. Magnesium Oxide
- 7. Sodium Chloride
- 8. Iron Sulfide
- 9. Calcium Chloride
- 11. Which has a lower frequency, red or blue light?