Across
- 3. Inner structure of atoms
- 5. Examples: Fluorine, Chlorine, Iodine, Bromine, Astatine
- 6. something with same number of protons but not same neutrons
- 7. rate of occurrence
- 8. positively charged ion
- 9. distance between waves
- 11. Examples: Helium, Neon, Argon, Krypton, Xenon, and Radon
- 15. radiation consisting of electromagnetic waves
- 17. Examples: Barium, Radium, Strontium, Calcium, Magnesium
- 19. nature of all matter
- 20. mass of an isotope
- 21. an optical device for producing and observing a spectrum of light orradiation from any source,
- 23. dalton
- 24. have unstable nuclei
- 25. negatively charged particle
- 29. high energy vs low energy
- 31. distance light can travel in a year
- 32. Vertical rows on periodic chart
- 34. radiation in the form of elementary particles emitted by anatomic nucleus,
- 37. number of protons in an atom
- 38. Abundance of isotopes
- 42. horizontal rows on periodic chart
Down
- 1. 1A, 2A, 3A, 4A, 5A, 6A, 7A, 8A
- 2. spectrum formed by electromagnetic radiations emitted by agiven source,
- 4. atomic weight
- 10. what makes an atom experience a force when close to other electrically charged matter
- 12. complete range of electromagnetic radiation from the longestradio waves
- 13. Elements in the middle of periodic chart
- 14. very small specks of energy
- 16. unit smaller than atom
- 18. negatively charged ion
- 22. positively charged particle
- 26. a comparative level of capacity for vigorous activity
- 27. smallest component of an element
- 28. quantum of electromagnetic radiation
- 30. electrically charged atom
- 33. anions and cations
- 35. any sudden and significant change
- 36. Examples: Potassium, Sodium, Lithium, Rubidium, and Cesium
- 39. a series of lines in the visible spectrum of hydrogen
- 40. neutral particle
- 41. core of atom