Across
- 6. a chemical substance that is present at the start of a chemical reaction
- 7. an ion with a negative electrical charge
- 9. a chemical process where a solid turns into a gas without going through a liquid stage
- 10. element with atomic number 18 and is represented by the symbol Ar
- 14. an element with an atomic number 6
- 15. Can be bent or hammered into shape
- 17. mass per unit volume
- 20. a branch of science that deals with the form and properties of matter and substances
- 22. group of 8 valence electrons around an atom
- 24. one or more atoms with the same atomic number but with different numbers of neutrons
- 26. containing one mole of a substance
- 27. a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases
- 29. A compound containing only carbon and hydrogen
- 31. element with properties intermediate between those of metals and nonmetals
- 32. a metric unit of weight equal to one thousandth of a kilogram
- 33. that which has mass and occupies space
- 34. A substance containing oxygen that has a pH of more than 7 and less than 14
- 37. a branch of science that explores the chemical processes within and related to living organisms
- 40. a heterogeneous mixture in which solute-like particles settle out of a solvent-like phase sometime after their introduction
- 41. chemical element with the symbol Ag
- 43. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
- 44. chemical element with the symbol Au
- 45. containing or involving or occurring in the form of ions
- 49. a mixture containing two or more metallic elements or metallic and nonmetallic
- 50. the conversion of a vapor or gas to a liquid
Down
- 1. means 10
- 2. of or relating to or characterized by covalence
- 3. a fourth state of matter
- 4. a visible suspension in the air of particles of a substance
- 5. A medium or substance that does not conduct heat or electricity
- 8. any compound containing a chlorine atom
- 11. a membrane-bound structure that contains a cell's hereditary information and controls its growth and reproduction
- 12. material which permits the flow of energy and electricity
- 13. any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions
- 16. the process of turning from liquid into vapor
- 18. metal with element symbol Pb and atomic number 82
- 19. The relative formula mass of a substance in grams
- 21. The chemical erosion of iron and steel
- 23. state of matter characterized by having a definite volume but not a definite shape
- 25. the degree of hotness or coldness of a body or environment
- 28. a type of homogeneous mixture in which the dispersed particles do not settle out
- 30. incapable of mixing
- 35. a sugar comprising one glucose molecule linked to a galactose molecule; occurs only in milk
- 36. an alloy of copper
- 38. amount of matter in a substance
- 39. unable to dissolve in a solvent
- 42. A substance that dissolves a solute
- 46. something that makes a chemical reaction happen more quickly without itself being changed
- 47. means 100
- 48. a common nonmetallic element; constitutes 78 percent of the atmosphere by volume