Science Vocab

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Across
  1. 5. a chemical bond that involves the sharing of electron pairs between atoms
  2. 6. the law that the properties of the elements are periodic functions of their atomic numbers
  3. 8. the total number of protons and neutrons
  4. 9. a substance that takes part in and undergoes change during a reaction
  5. 10. properties are intermediate between those of metals and solid nonmetals. They are electrical semiconductors.
  6. 12. a non solid material
  7. 15. can include changing the color, shape, state of matter, or volume of a substance.
  8. 18. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei
  9. 19. when two ions bond
  10. 20. a particle smaller than an atom
  11. 21. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons
  12. 22. is energy stored in the bonds
  13. 28. single column
  14. 31. a combination of two or more pure substances
  15. 34. characteristic of something
  16. 37. a stable subatomic particle occurring in all atomic nucle
  17. 39. positive charged core of an atom
  18. 42. does not depend on that of another
  19. 43. type of chemical reaction where two compounds react, and the positive ions and the negative ions of the two reactants switch places
  20. 45. an exothermic reaction in which something reacts with oxygen
  21. 47. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
  22. 49. absorbs
  23. 50. a substance consisting of atoms which all have the same number of protons
  24. 51. a quantity obtained by multiplying quantities together
  25. 54. legally sound, effective, or binding
  26. 55. smallest form of an element
  27. 56. a solid material
  28. 57. a stable subatomic particle with a charge of negative electricity
  29. 59. the bond between two chemicals
  30. 60. a material system made up of two or more different substances
Down
  1. 1. a tryout or experiment to test quality, value, or usefulness
  2. 2. a molecular ion, is a charged chemical species
  3. 3. quantity that is unknown but assumed to have a fixed value in a specified mathematical context
  4. 4. substance a definite and constant composition
  5. 7. a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed
  6. 11. total number of protons and neutron is a neucleus
  7. 13. equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side
  8. 14. chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine
  9. 16. is a type of chemical reaction where one element replaces another element in a compound.
  10. 17. designed to minimize the effects of variables other than the independent variable
  11. 23. puts out
  12. 24. a set of chemical symbols showing the elements present in a compound and their relative proportions
  13. 25. chemical reaction in which a single compound breaks down into two or more elements or new compounds
  14. 26. educated guess
  15. 27. depends on that of another
  16. 29. constant term related to the properties of a product
  17. 30. a positively charged ion,
  18. 32. a positively charged ion,
  19. 33. A mixture which has uniform composition and properties throughout
  20. 35. chemical reaction in which two or more simple substances combine to form a more complex product
  21. 36. liable to change
  22. 38. allow atoms to make covalent bonds
  23. 40. a subatomic particle of about the same mass as a proton but without an electric charge
  24. 41. the symbolic representation of a chemical reaction in the form of symbols and formulae
  25. 44. can be observed or measured without changing the composition of matter
  26. 46. is any change that results in the formation of new chemical substances
  27. 48. the amount of protons in a neucleus
  28. 52. The mass of atoms, their size, and how they are arranged
  29. 53. a substance formed when two or more chemical elements
  30. 58. a group of similar elements