Matter & Energy Vocab Review

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Across
  1. 3. matter cannot be created/destroyed, only changed
  2. 6. describe what happens in a chemical reaction; C_____ E______
  3. 8. each element is represented by a _____
  4. 9. solid to liquid; physical change
  5. 10. less mass = ____ inertia
  6. 13. include the chemical symbol and # of each type of atom in a molecule; C____ F_____
  7. 15. system scientists use to organize elements
  8. 17. 2 or more elements chemically combined; can only be separated by breaking chemical bonds
  9. 22. Action-Reaction forces happen _______ (same time)
  10. 23. products and reactants will be _____
  11. 24. greater mass = _____ acceleration
  12. 26. new substance is formed when atoms are rearranged; new substance properties are different from the original
  13. 29. a liquid to solid; physical change
  14. 30. present at the end of chemical reaction; right side of chemical equation
  15. 32. solid forms when 2 solutions mix
  16. 33. gas to liquid; physical change
  17. 34. a substance is broken up into pieces so small they cannot be seen
  18. 36. push/pull
  19. 38. property of matter; causes an object to resist changing its motion
  20. 39. element symbols starts with a ______ letter
  21. 40. present at the beginning of chemical reaction; left side of chemical equation
  22. 41. more mass = ____ inertia
  23. 42. Newton’s ___ Law; when an object is pushed, it pushes back with equal/opposite force
  24. 43. mixtures that are easy to see and separate by hand or density
  25. 44. 1 or more substances change to new substances
Down
  1. 1. Evidence of a chemical reaction: c___ c___
  2. 2. change to size/shape, does NOT create a new substance
  3. 4. force that 2 surfaces exert on each other when they push/rub together
  4. 5. an object ________ when it speeds up/slows down/changes direction
  5. 7. force that changes motion; object will stop/start moving/change direction
  6. 11. forces that resist the motion of objects, causing them to slow down/stop
  7. 12. another form of friction; as an object moves through the air, air pushes back on the object
  8. 14. Chemical Change; temperature increases/decreases when 2 substances combine
  9. 16. 2 substances mix and temperature increases
  10. 18. if a subscript is outside a parenthesis, it will _______ (multiply) to all elements inside parenthesis
  11. 19. anything that has mass and takes up space
  12. 20. force that does NOT change motion; object will stay at rest or or speed remains constant
  13. 21. two substances mix together and fizz/bubble; production of ____
  14. 23. 2 substances mix and temperature decreases
  15. 25. purest type of matter; 1 type of atom; cannot break down
  16. 27. evenly mixed; looks the same throughout; hard to separate; evaporation
  17. 28. liquid to gas; physical change
  18. 31. little number in chemical formulas after each element; tells how many
  19. 33. Big number in chemical equation; multiplies to all of the connected elements
  20. 35. less mass = _____ acceleration
  21. 37. Newton’s _____ Law of Motion: object in motion will stay in motion & object at rest will stay at rest until acted on by an unbalanced force
  22. 41. 2 or more substances; atoms not chemically bonded