Science Vocabulary

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Across
  1. 1. Has a positive charge and is inside the nucleus
  2. 2. Positive, lost electrons, usually metals
  3. 5. Has a neutral or no charge and is inside the nucleus
  4. 7. Cannot be denied or doesn't work
  5. 9. Elements share electrons
  6. 10. A reaction in which something reacts with oxygen. The combustion of organic compounds usually takes the form organic compound + oxygen => water + carbon dioxide.
  7. 12. The number placed before the variable
  8. 17. Describes how a substances changes into a new substance
  9. 18. Location of protons and neutrons
  10. 19. The substance before the change, written on the left side of the arrow
  11. 20. Something that stays the same
  12. 21. Has an equal number of atoms on both sides of the arrow.
  13. 26. To where you can control your experiment
  14. 28. Characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed
  15. 33. Gained, usually nonmetal
  16. 36. The amount of times you experience your experiment
  17. 37. An element, feature, or factor that is liable to vary or charge
  18. 39. Can be observed without changing the substance
  19. 41. Elements transfer electrons
  20. 42. The elements have a repeating pattern that allow them to be placed in groups and periods
  21. 44. 2 compounds form 2 new compounds
  22. 46. Ion with more than one atom, has a charge, acts like a single unit
  23. 49. A set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound.
  24. 53. Releases energy in the form of heat
  25. 54. Have electrons that are like noble gas electrons
  26. 55. The columns
  27. 57. Simplest form of that species
  28. 58. An element whose properties are intermediate between those of metals and solid nonmetals.
  29. 59. Rounded atomic mass
Down
  1. 1. The substance after the change has occurred, written o the right side of the arrow
  2. 3. Surrounding an object
  3. 4. Rows
  4. 6. I compound forms 2 or more elements
  5. 8. Two or more atoms of the same element, they have the same number of protons but different number of neutrons
  6. 9. A change that creates a new substance
  7. 11. The variable that doesn't depend on another
  8. 13. A chemical change that produces or makes a new substance
  9. 14. 1 element and 1 compound form
  10. 15. Your purpose for having the experiment
  11. 16. How compact an object is
  12. 22. Symbolic representation of a chemical reaction in the form of symbols and formulae
  13. 23. A shiny hard piece of matter
  14. 24. 2 elements form a compound
  15. 25. Parts of mixture look the same
  16. 27. The variable that depends on another
  17. 29. Same ratio of atoms no matter the size of the substances
  18. 30. Protons, electrons, and neutrons
  19. 31. Absorbs energy in the form of heat
  20. 32. Parts of a mixture look different
  21. 34. Has a negative charge and is outside the nucleus in orbit
  22. 35. Physical restraints used to hold on to something
  23. 38. A change that does not affect the identity of the substance
  24. 40. Energy Energy stored in the bonds of chemical compounds
  25. 43. Average mass of all atoms
  26. 45. 2 or more atoms chemically combined
  27. 47. All atoms want 8 valence electrons like the noble gasses
  28. 48. Identifies the element
  29. 50. 2 or more atoms/ compounds physically combined
  30. 51. An element or substance that is not a metal
  31. 52. Makes a reaction go faster but is not used up
  32. 56. The basic unit of a chemical element