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64 Multiple choice questions

  1. term for particles that have no components, no building blocks, and no smaller parts
  2. particle of matter that has virtually no mass and travels at the speed of light
  3. collection of protons and neutrons in the center of an atom
  4. a negatively charged ion with more electrons than protons
  5. state of matter that is a highly ionized gas and can only exist at very high temperatures
  6. process that occurs when a neutron's down quark changes into an up quark, changing the neutron into a proton and forcing the emission of a high-energy electron
  7. the largest atomic particle that has a neutral charge
  8. term for any type of emitted energy
  9. term for hadrons that contain two quarks
  10. the process in which a photon of gamma radiation passes through a heavy material, such as lead; the photon suddenly vanishes; and a pair of oppositely charged particles appear
  11. term for hadrons that contain three quarks
  12. name for the horizontal rows of elements on the Periodic Table
  13. a chemical combination of two or more atoms
  14. formula for mass
  15. process in which an orbiting electron is absorbed by a proton as it travels close to the nucleus
  16. a molecule in which all the elements are the same
  17. the massless particle that binds quarks together
  18. term for atoms with the same atomic number but different mass numbers because of different numbers of neutrons
  19. a positively charged ion with more protons than electrons
  20. term for particles like the positron, the antiproton, and the antineutron
  21. tiny particle that is the basic building block of all matter
  22. process in which a nucleus emits a high-energy particle of two protons and two neutrons, causing a low amount of radiation
  23. term for the general mass of an element, found by weighted average
  24. state of matter that has a definite volume but not a definite shape
  25. state of matter with a definite shape and volume that consists of low-energy particles packed closely together
  26. term for particles that are smaller than an atom
  27. term for any substance believed to contain quarks
  28. the smaller particles that make up protons and neutrons
  29. positively charged particles in an atom that give the atom its identity as an element
  30. the process in which the quarks of an atom's protons and neutrons shift and release energy
  31. term for an atom whose charge is changed due to the loss or gain of electrons
  32. term for the electron and positron that denotes the fact that they have the same characteristics, but opposite charges
  33. formula for density
  34. tiny particles of light
  35. occurs when a positron and electron collide and convert their combined masses into a form of energy, either a low-energy photon or gamma radiation
  36. term for a mixture that settles into layers of different particles or has large clumps of molecules
  37. The number of protons in a given element is called the ____ ____.
  38. term that represents the amount of force the earth's gravity exerts on an object's mass
  39. term for any substance that cannot be broken down by chemical means into a simpler substance
  40. a substance containing only one kind of atom or molecule
  41. negatively charged particles that move about the nucleus
  42. state of matter with high-enery particles that will spread to fill its container
  43. unit that is one-twelfth the mass of a carbon-12 atom
  44. When a photon of ____ _______ passes through a heavy material, such as lead, the photon suddenly vanishes and a pair of oppositely charged particles appear.
  45. term for the ratio of a given sample's density to a standard density
  46. formula for specific gravity
  47. term for a positively charged electron
  48. term for a region of high likelihood for finding an electron as it travels around the nucleus
  49. name for the vertical rows of elements on the Periodic Table
  50. term that represents how much inertia an object has, or how much force is required to change the object's state of motion
  51. a high-energy particle of two protons and two neutrons; a reactive helium cation
  52. term for a mixture in which the particles of each substance are uniformly distributed
  53. term for the time required for half a radioactive substance's mass to decay into something else
  54. a molecule in which the atoms are of different elements
  55. formula for energy
  56. electrons in the outermost electron layer
  57. the ratio of an object's mass to its volume
  58. a physical combination of two or more elements or compounds that can be easily separated
  59. matter's unique property of resisting any change in its present state of motion
  60. the sum of the number of protons and neutrons in the nucleus
  61. the difference between the expected mass of a nucleus and the actual mass, caused by strong nuclear force
  62. anything that has mass and takes up space
  63. term for atoms with a neutron to proton ratio greater than 1:1
  64. term for particles such as electrons that do not contain any quarks