Physical Science Terms

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Across
  1. 4. when a liquid turns to a gas
  2. 8. the atomic _____ tells you the number of protons
  3. 9. work _____ kinetic energy
  4. 10. black and silver cans are at the same temperature. The silver can cools _____
  5. 12. as matter changes phase, the molecules change _____ energy
  6. 16. the amount of time for a radioactive substance to decay
  7. 17. Combination of two or more substances where a new substance with new properties is formed
  8. 19. the amount of energy to raise 1 g of matter by 1 C is called _____ heat
  9. 20. anything that has volume and mass
  10. 22. property that describes the behavior of a substance
  11. 24. term that describes Ne20 and Ne22
  12. 25. radioactive decay type released when uranium decays into thorium
  13. 27. measured in m/s and tells you which way on object moves
  14. 28. bond where electrons are shared between atoms
  15. 30. phase where molecules are unconnected which allows matter to be anywhere
  16. 31. when a force is applied for a displacement
  17. 33. most objects _____ when heat is added
  18. 34. happens when an object slows down or changes direction
  19. 35. the total number of protons and neutrons gives you the atomic _____
  20. 36. when fluorine bonds with calcium, the compound will have how many fluorine ions?
  21. 37. convection is how heat transfer occurs in a _____
  22. 38. Atoms that have a charge are ____
  23. 40. radioactive decay type produced when a neutron turns into a proton
  24. 43. discovered by Rutherford
  25. 44. bond holding sodium and chlorine together
  26. 45. an action that tries to change the motion of an object
  27. 47. chemical equation type that has a hydrocarbon and oxygen as reactants
  28. 48. flow of thermal energy between objects
Down
  1. 1. A Beta particle is this common subatomic particle
  2. 2. phase change where a solid changes directly to a gas
  3. 3. energy that is the kinetic and potential energy of matter’s molecules
  4. 5. protons and electrons have equal size of this quantity
  5. 6. Combination of two or more substances where each substance retains its own properties
  6. 7. Newton’s ____ Law describes how velocity changes
  7. 10. mixture where all substances are in the same state of matter
  8. 11. a quantity with size and direction
  9. 13. force type that always acts on an object perpendicularly from a surface
  10. 14. the change in position of an object
  11. 15. one of two forces that always opposes the motion of an object
  12. 16. mixture type that is salt water or brass
  13. 18. Particle that determines what element an atom is
  14. 21. David pulls Eugenia and they both move illustrates Newton’s ____ Law
  15. 23. heat always flows from hot to ____
  16. 26. Density and color are _____ properties of matter
  17. 29. energy of motion
  18. 32. all chemical equations must be _____
  19. 39. the column an element is in tells you have many _____ electrons
  20. 41. the neutral particle found in the nucleus
  21. 42. oxygen and methane are this type of matter
  22. 46. smallest piece of an element