Across
- 2. radius of neutral atom.
- 6. ex:acidity,reactivity,flammability.
- 7. solid,liquid,gas,plasma.
- 9. take shape of its container.
- 10. negative charge circling the nucleus.
- 13. can be found in the center of periodic table.
- 16. found on the right side of the periodic table.
- 17. two or more substance combined together.
- 19. example:color,length,volume,luster.
- 21. similar to electron shells.
- 22. elements 58-71.
- 25. cannot be broken down into smaller substances.
- 26. family found in group 17.
- 28. found on the left side of periodic table.
- 30. contains genetic materials.
- 36. liquid to gas.
- 37. family found in group 18.
- 38. energy needed to remove an electron.
- 39. made up of two or more element.
- 42. smallest particle of an element.
- 44. the bigger number on an element.
- 45. tightly packed.
- 46. held together by chemical bond.
- 47. abbreviated elements on the periodic table.
- 48. orbital rings around the nucleus.
- 49. solid to gas.
- 50. smallest particle in the universe.
Down
- 1. positive charge inside a nucleus.
- 3. cannot be reversible.
- 4. energy needed to attract electron.
- 5. the sum of all mass of an element isotopes.
- 8. the smaller number on the element.
- 11. gas to liquid.
- 12. family found in group 1.
- 14. difference in number of neutrons.
- 15. can be reversible.
- 18. not uniform to the eye.
- 20. negative ions.
- 23. made up of one type of particle.
- 24. family found in group 2.
- 27. appear uniform to the eye.
- 29. elements 90-103.
- 31. stair-steps on periodic table.
- 32. neutral charge inside the nucleus.
- 33. positive ions.
- 34. radius of an atom's ion.
- 35. area around nucleus where the electrons are likely to be found.
- 40. no definite shape or volume.
- 41. difference in number of electrons.
- 43. very high temperature of a star.