Across
- 2. tiny bundles of energy
- 6. A heavy, poisonous, metallic liquid used in some thermometers
- 7. it is the most important component of alloys
- 8. this is the gas that everyone needs for breathing
- 9. is any learning technique that aids information retention.
- 10. it is a dumbbell shaped cloud
- 13. is a silvery white metallic element that reacts radily with atoms in the air
- 16. gain or less of electrons
- 17. has definite mass and volume
- 20. is a bleaching agent in the manafacture of textile and paper
- 21. exist as colorless,odorless and is common in the quohollan atmosphere
- 22. used to help physicians diagnose the disease or damage in the patients body
- 26. using for equations relating bond energies
- 27. an essential trace element for plants,animals and humans
- 28. is a gas,not a positive or negative ion
- 31. bones/DNA, fertilizer, red match strike, weaponry/grenades
- 40. aircrafts, naval ships, body replacements (surgical implants), alloy
- 42. a branch of science that deals with the study of composition
- 44. also have diverse and unique properties
- 47. is a pure substance that is a combination of two or more elements
- 48. the smallest individual part of an element
- 50. helps build strong bones
- 51. is a charged atom or particle
Down
- 1. the most important compound in the universe
- 3. important in allowing us to digest our food properly
- 4. has no net electric charge
- 5. is used as a radiation source in cancer therapy
- 9. steel, batteries, railroad tracks, ceramics, glass (for color) gives amney stones their color
- 11. consist of 28 elements grouped in lanthanides and actinides
- 12. has an electrical charge of positive one
- 14. are substances whose colors are affected by acids and bases
- 15. it is used for protection from nuclear disasters
- 18. are element that have the properties intermediate between metals and non metals
- 19. discovered radio activity
- 23. it is the atom that contained unpaired electrons
- 24. if all electrons in an atom are paired
- 25. is a high temperature physical state of matter
- 29. used to express the measurement of an atom
- 30. is a mixture of elements that has metallic properties
- 31. involved in the process of balancing fluid in the body
- 32. regions in the space around the nucleus where electrons are found
- 33. consist of group 3A through group 8A
- 34. non-corroding hard metal
- 35. soft lightweight metal
- 36. a negatively charged particle
- 37. when it is negatively charged
- 38. it is like a four leaf clover
- 39. high speed tool, catalyst, ceramics
- 41. who built the table with the arranged in horizontal row
- 43. when it is positively charged
- 45. states that electrons fill first the orbitals of the lowest energy
- 46. a fundamental part of the diet of humans
- 49. it is a spherical cloud that becomes has dense
- 50. used as electroplating