Across
- 2. Element with symbol K
- 7. Can be seen with the naked eye
- 10. The number of protons in an atom's nucleus
- 12. An unstable nucleus with too many protons and neutrons
- 13. Metric system prefix meaning 1,000
- 14. Phase change of solid to gas (dry ice)
- 15. Element with symbol Ag
- 16. Phase change of solid to liquid
- 19. Scientist who developed the periodic table
- 24. I have no charge
- 25. I am a silvery metal that forms salt
- 27. Elements are arranged based on _______ atomic number on the periodic table
- 28. Current model of the atom
- 30. I have a +1 charge
- 31. I behave like a solid metal but I am a gas with one electron
- 32. Type of matter made of at least two different elements but cannot be separated
- 35. Type of radiation made from an electron
- 36. I have a -1 charge
- 41. My atomic number is 79
- 46. Model of the atom using electron "orbits"
- 47. Phase of of gas to liquid
- 49. I am the only nonmetal that is a liquid at room temperature
- 50. Phase of matter containing charged particles
- 52. The term that refers to repeating patterns of chemical properties
- 53. I was used in making the atomic bomb
- 54. Type of radiation made from two protons and two neutrons
- 56. I am a metalloid frequently used in making computer chips
- 58. Elements with properties of metals and nonmetals
Down
- 1. Name for the elements in the first column on the periodic table
- 3. Name for a vertical column on the periodic table
- 4. Phase change of liquid to solid
- 5. Phase of matter with particles moving the fastest
- 6. Equipment that uses a very hot flame
- 8. Uses letters, numbers, and formulas to study chemistry
- 9. Phase change of liquid to gas at the boiling point
- 11. I have almost no mass
- 17. I am used to make balloons float
- 18. Most abundant element in the universe
- 20. I am a green, deadly gas that makes salt
- 21. Phase of matter with particles vibrating in the same place
- 22. I am sometimes used as a poison
- 23. Phase of matter with definite volume but no definite shape
- 26. Type of matter that can have its parts physically separated
- 29. I am a gas with most common isotope mass number 16.
- 33. Elements to the right of the "stairstep"
- 34. I am a metal that is a liquid at room temperature
- 37. Metric system prefix meaning 1/100
- 38. Total number of protons + neutrons in a nucleus
- 39. An unstable atom emits particles and energy to become more stable
- 40. I am a metal with 28 protons
- 42. Phase change of gas to solid (frost)
- 43. Elements to the left of the "stairstep"
- 44. Name for different atoms of the same element because of differing neutrons
- 45. Properties like flammability and corrosion
- 48. Part of an atom where protons and neutrons are located
- 51. Type of radiation that is energy moving at the speed of light
- 55. Properties that can be observed without changing the substance
- 57. The most basic type of matter made of a single type of atom