Matter and Chemistry Vocabulary Test

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Across
  1. 1. A material that decreased the rate of a reaction
  2. 3. The mass of an atom which is the sum of the protons and neutrons
  3. 4. A characteristic of a pure substance that con be observed with out changing it into another substance
  4. 8. A chart of the elements showing the repeating pattern of their properties
  5. 10. An element that has some characteristics of both metals and nonmetals
  6. 11. One of the elements in Groups 3 through 12 of the periodic table
  7. 12. The ease and speed with which an element combines or reacts with other elements
  8. 14. A family of very reactive elements whose atoms gain or share one electron
  9. 16. Two or more substances that are mixed together but not chemically combined
  10. 17. The measurement of how acidic or basic a substance is on a scale of 0 (very acidic) to 14 (very basic)
  11. 20. A biological catalyst that lowers the activation energy of reactions in cells
  12. 21. A reaction that absorbs energy in the form of heat (ex. Baking soda and vinegar)
  13. 25. The ability of a material to be pulled out into a long wire
  14. 27. A column of elements on the periodic table (18 total)
  15. 28. A molecule consisting of two atoms
  16. 29. The ability of an object to transfer heat or electricity
  17. 30. A row of elements on the periodic table (7 total)
  18. 31. The basic particle that forms elements
  19. 34. A class of elements characterized by physical properties that include shininess, malleability, ductility and conductivity
  20. 35. A substance formed as a result of a chemical reaction
  21. 36. A single kind of matter that is pure and has a specific set of properties
  22. 41. A formula that gives the elements in a compound and the ratio of atoms.
  23. 43. A chemical change in which a substance combines with oxygen, as when iron oxidizes forming rust
  24. 44. Negatively charged particle circling the nucleus of an atom
  25. 45. A material that conducts electricity under certain conditions
  26. 47. A system in which not matter is allowed to enter or leave
  27. 48. A type of element whose physical properties are opposite of metals
  28. 50. A family of uncreative elements whose atoms do not gain, lose, or share electrons
  29. 51. A chemical reaction in which two or more simple substances combine to form a new, more complex substance
  30. 53. The gradual wearing away of a metal element due to a chemical reaction
  31. 55. A substance with a high quantity of OH- ions that tastes bitter, feels slippery, and turns red litmus paper blue
  32. 56. A particle made of two or more atoms bonded together.
  33. 57. An atom with the same number of protons and a different number of neutrons
  34. 58. Particle in the nucleus of an atom with no charge
Down
  1. 2. A reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  2. 3. An element in Group 2 of the periodic table
  3. 5. The process in which substances undergo chemical changes that result in the formation of new substances
  4. 6. A solid that forms from a solution during a chemical reaction
  5. 7. A substance that enters into a chemical reaction
  6. 9. The minimum amount of energy needed to get a chemical reaction started
  7. 13. A characteristic of a pure substance that describes its ability to change into a different substance
  8. 14. A mixture in which substances are evenly distributed throughout the mixture
  9. 15. A change in which one or more substances combine or break apart to form new substances
  10. 18. A mixture in which pure substances are unevenly distributed throughout the mixture
  11. 19. An element in Group 1 of the periodic table
  12. 22. A reaction that releases energy in the form of heat (ex. Burning)
  13. 23. The ability of a material to be pounded into shapes
  14. 24. The principle stating that matter is not created or destroyed during a chemical reaction
  15. 26. A system in which mater can enter from or escape to the surroundings
  16. 28. A chemical reaction that breaks down compounds into simpler products
  17. 32. Anything that has mass and occupies space
  18. 33. A material that increases the rate of a reaction by lowering the activation energy
  19. 37. The number of protons in an atom
  20. 38. Positively charged particle in the nucleus of an atom
  21. 39. A change in a substance that does not change its identity
  22. 40. The force that holds two atoms together
  23. 42. A one or two letter abbreviation of an element found on the periodic table
  24. 46. The study of the properties of matter and how matter changes
  25. 49. A substance with a high quantity of H+ ions that tastes sour, reacts with metals and carbonates, turns blue litmus paper red
  26. 52. A pure substance made of two or more elements chemically combined.
  27. 54. A pure substance that cannot be broken down into other substances by chemical or physical means